| [1] |    | Concentration-Gradient Prussian Blue Cathodes for Na-Ion Batteries, Pu Hu, Wenbo Peng, Bo Wang, Dongdong Xiao, Utkarsh Ahuja, Julien Rethore, Katerina E. Aifantis, ACS Energy Letters, Vol. 5, issue 1, pp. 100-108 (2020), doi:10.1021/acsenergylett.9b02410
| A concentration gradient composition is proposed as an effective approach to solve the mechanical degradation and improve the electrochemical cyclability for cathodes of sodium ion batteries. Concentration gradient NaxNiyMn1 yFe(CN)6·nH2O particles, in which the Ni content gradually increased from the interior to the particle surface, were syn...
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| [2] |   | An open-source Abaqus implementation of the phase-field method to study the effect of plasticity on the instantaneous fracture toughness in dynamic crack propagation, Gergely Molnar, Anthony Gravouil, Rian Seghir, Julien Rethore, Computer Methods in Applied Mechanics and Engineering, Vol. 365, number 113004, issue 582593 (2020), doi:10.1016/j.cma.2020.113004
| Brittle and ductile dynamic fracture in solids is a complex mechanical phenomenon which attracted much attention from both engineers and scientists due to its technological interests. Modeling cracks in dynamic cases based on a discontinuous description is difficult because it needs additional criteria for branching and widening. Due to the very short time scales and the spatial complexity of the ...
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| [3] | | Data-driven fracture mechanics, P. Carrara, L. De Lorenzis, L. Stainier, M. Ortiz, Computer Methods in Applied Mechanics and Engineering, Vol. 372, number 113390, issue 2 (2020), doi:10.1016/j.cma.2020.113390
| We present a new data driven paradigm for variational brittle fracture mechanics. The fracture related material modeling assumptions are removed and the governing equations stemming from variational principles are combined with a set of discrete data points, leading to a model free data driven method of solution. The solution at a given load step is identified as the point within the data set that...
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| [4] | | Fabrication, microstructure, and properties of fired clay bricks using construction and demolition waste sludge as the main additive, Glaydson Simoes dos Reis, Bogdan Grigore Cazacliu, Alexis Cothenet, Philippe Poullain, Michaela Wilhelm, Carlos Hoffmann Sampaio, Eder Claudio Lima, Weslei Ambros, Jean Michel Torrenti, Journal of Cleaner Production, Vol. 258, number 120733, issue 5 (2020), doi:10.1016/j.jclepro.2020.120733
| Green routes to prepare or manufacture sustainable building materials have been attracting much attention over the years targeting sustainability issues. In this investigation, for the first time, sludge from the inert mineral part of the construction and demolition waste (RA S) is used as a primary raw material in the fabrication of fired bricks for building purposes. Fired bricks fabricated with...
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| [5] | | Towards defect monitoring for metallic additive manufacturing components using phased array ultrasonic testing, A. Chabot, N. Laroche, E. Carcreff, M. Rauch, J. Y. Hascoet, Journal of Intelligent Manufacturing, Vol. 31, issue 5, pp. 1191-1201 (2020), doi:10.1007/s10845-019-01505-9
| Additive manufacturing (AM) is a rising technology bringing new opportunities for design and cost of manufacturing, compared to standard processes like casting and machining. Among the AM techniques, direct energy deposition (DED) processes are dedicated to manufacture functional metallic parts. Despite of their promising perspectives, the industrial implementation of DED processes is inhibited by...
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| [6] | | Hydromechanical modeling of granular soils considering internal erosion, Jie Yang, Zhen Yu Yin, Farid Laouafa, Pierre Yves Hicher, Canadian Geotechnical Journal, Vol. 57, issue 2, pp. 157-172 (2020), doi:10.1139/cgj-2018-0653
| This paper attempts to formulate a coupled practical model in the framework of continuum mechanics to evaluate the phenomenon of internal erosion and its consequences on the mechanical behavior of soils. For this purpose, a four constituent numerical approach has been developed to describe the internal erosion process. The detachment and transport of the fine particles have been described by a mas...
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| [7] | | Concrete crack monitoring using a novel strain transfer model for distributed fiber optics sensors, Antoine Bassil, Xavier Chapeleau, Dominique Leduc, Odile Abraham, Sensors Switzerland, Vol. 20, number 2220, issue 8 (2020), doi:10.3390/s20082220
| In this paper, we study the strain transfer mechanism between a host material and an optical fiber. A new analytical model handling imperfect bonding between layers is proposed. A general expression of the crack induced strain transfer from fractured concrete material to optical fiber is established in the case of a multilayer system. This new strain transfer model is examined through performing w...
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| [8] | | Properties of cement pastes and mortars containing recycled green glass powder, Samir Nahi, Nordine Leklou, Abdelhafid Khelidj, Mohamed N. Oudjit, Abdelfatah Zenati, Construction and Building Materials, Vol. 262, number 120875, issue 1 (2020), doi:10.1016/j.conbuildmat.2020.120875
| This work deals with the characterization of the properties of mortars and cement pastes made with powdered soda lime waste glass. Different rates of cement replacement by weight are used: 0%, 10%, 25%, 35% and 60%. Both fresh and hardened properties are assessed. The influence of glass powder on the workability of mortar is determined using flow table tests. Chemical shrinkage and hydration heat ...
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| [9] | | Alkali-activated grouts based on slag-fly ash mixtures: From early-age characterization to long-term phase composition, Abdelilah Aboulayt, Faten Souayfan, Emmanuel Roziere, Reda Jaafri, Anass Cherki El Idrissi, Redouane Moussa, Christophe Justino, Ahmed Loukili, Construction and Building Materials, Vol. 260, number 120510 (2020), doi:10.1016/j.conbuildmat.2020.120510
| Alkali activation and the combination of slag and fly ash are expected to improve the chemical stability of grouts designed for underground works. Sodium silicate activated grout mixtures have been designed with a liquid activator volume fraction of 75%. As the data related to such high water to solid ratios are scarce, a comprehensive study has been designed in order to determine the phase compos...
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| [10] | | Three-dimensional hydromechanical modeling of internal erosion in dike-on-foundation, Jie Yang, Zhen Yu Yin, Farid Laouafa, Pierre Yves Hicher, International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 44, issue 8, pp. 1200-1218 (2020), doi:10.1002/nag.3057
| Currently, numerical studies at the real scale of an entire engineering structure considering internal erosion are still rare. This paper presents a three dimensional (3D) numerical simulation of the effects of internal erosion within a linear dike located on a foundation. A two dimensional (2D) finite element code has been extended to 3D in order to analyze the impact of internal erosion under mo...
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| [11] | | Evolution of mechanical properties with time of flyashbased geopolymer mortars under the effect of granulated ground blast furnace slag addition, Mateusz Sitarz, Izabela Hager, Marta Choinska, Energies, Vol. 13, number 1135, issue 5 (2020), doi:10.3390/en13051135
| Geopolymers are considered to alternatives to Portland cement, providing an opportunity to exploit aluminosilicate wastes or coproducts with promising performances in the construction sector. This research is aimed at investigating the strength of flyashgeopolymers of different ages. The effect of granulated blast furnace slag (GGBFS) as a partial replacement of fly ash (FA) on the tensile (ft) an...
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| [12] | | Analysis of corrosion risk due to chloride diffusion for concrete structures in marine environment, Tristan Senga Kiesse, Stephanie Bonnet, Ouali Amiri, Anne Ventura, Marine Structures, Vol. 73, number 102804 (2020), doi:10.1016/j.marstruc.2020.102804
| The chloride induced steel corrosion is one of the main causes of deterioration for reinforced concrete structures exposed to marine environments. The chloride ingress into reinforced concrete structures is even more complex since it depends on random parameters linked to transport and chemical properties of materials, which results in variability of corrosion initiation. This variation raises the...
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| [13] | | A new way to analyse the size effect in quasi-brittle materials by scaling the heterogeneity size, Syed Yasir Alam, Ran Zhu, Ahmed Loukili, Engineering Fracture Mechanics, Vol. 225, number 106864, issue 2 (2020), doi:10.1016/j.engfracmech.2019.106864
| Size effect has been a major problem in the design of quasi brittle materials like concrete. The existing approaches consider the determination of size independent properties mainly by testing geometrically similar specimens. These specimens vary in size from small to large. Often it is difficult to perform testing on these specimens because of their size. Moreover, these approaches do not conside...
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| [14] | | Intelligent assistant system as a context-aware decision-making support for the workers of the future, Farouk Belkadi, Mohamed Anis Dhuieb, Jose Vicente Aguado, Florent Laroche, Alain Bernard, Francisco Chinesta, Computers and Industrial Engineering, Vol. 139, number 105732, issue 1 (2020), doi:10.1016/j.cie.2019.02.046
| The key role of information and communication technologies (ICT) to improve manufacturing productivity within the paradigm of factory of the future is often proved. These tools are used in a wide range of product lifecycle activities, from the early design phase to product recycling. Generally, the assistance tools are mainly dedicated to the management board and fewer initiatives focus on the ope...
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| [15] |  | Microstructural organization of remoulded clays in relation with dilatancy/contractancy phenomena, Qian-Feng Gao, Mahdia Hattab, Mohamad Jrad, Jean-Marie Fleureau, Pierre-Yves Hicher, Acta Geotechnica, Vol. 15, issue 1, pp. 223-243 (2020), doi:10.1007/s11440-019-00876-w
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| [16] | | Estimation of the response of a deeply immersed cylinder to the shock wave generated by an underwater explosion, Kevin Brochard, Herve Le Sourne, Guillaume Barras, Marine Structures, Vol. 72, number 102786, issue 5 (2020), doi:10.1016/j.marstruc.2020.102786
| The work presented in this paper is focused on the development of a simplified method to study the structural response of a deeply immersed cylinder subjected to the primary shock wave generated by an underwater explosion. The proposed analytical model is based on the string on foundation method initially developed by Hoo Fatt and Wierzbicki, who converted the two dimensional boundary value proble...
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| [17] | | Advanced techniques for the study of shrinkage-induced cracking of concrete with recycled aggregates at early age, A. Z. Bendimerad, B. Delsaute, E. Roziere, S. Staquet, A. Loukili, Construction and Building Materials, Vol. 233, number 117340 (2020), doi:10.1016/j.conbuildmat.2019.117340
| The present work analyses the impact of the substitution of natural coarse gravel and sand by recycled gravel and sand on the concrete behavior under free and restrained condition since setting. The methodology presented in this paper associates a Temperature Stress Testing Machine (TSTM) with free shrinkage tests and other experimental advanced techniques, such as direct tensile testing and the m...
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| [18] | | Effect of micro-macro crack interaction on softening behaviour of concrete fracture, Syed Yasir Alam, Ahmed Loukili, International Journal of Solids and Structures, Vol. 182-183, issue 12, pp. 34-45 (2020), doi:10.1016/j.ijsolstr.2019.08.003
| During the fracture of concrete the formation of microcracks is a continuous process where new microcracks are formed in the vicinity of the macrocrack. As the fracture grows, these microcracks interact with the macrocrack and disrupt its smooth opening. In fracture mechanics based approaches; a smooth stress crack opening softening behaviour is generally used to describe the local fracture proces...
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| [19] | | Numerical analysis of the failure of recycled aggregate concrete by considering the random composition of old attached mortar, Menghuan Guo, Frederic Grondin, Ahmed Loukili, Journal of Building Engineering, Vol. 28, number 101040, issue 10 (2020), doi:10.1016/j.jobe.2019.101040
| Considering the randomness in properties of old adhered mortar (OM) around recycled aggregate (RA), a statistical analysis on its composition has been performed. The random effect of OM on the fracture behaviour of recycled aggregate concrete (RAC) at the mesoscopic scale has then been studied. This numerical approach explicitly takes into account an effective interphase (EI) between RA and cement...
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| [20] | | A Cosserat Breakage Mechanics model for brittle granular media, Nicholas Anton Collins-Craft, Ioannis Stefanou, Jean Sulem, Itai Einav, Journal of the Mechanics and Physics of Solids, Vol. 141, number 103975, issue 100 (2020), doi:10.1016/j.jmps.2020.103975
| This paper introduces a Breakage Mechanics model formulated in the framework of Cosserat continuum theory. This formulation allows us to account for the interaction of grain size evolution with shear band formation in a physically motivated and thermodynamically consistent way. We provide an upscaling procedure that introduces material parameters accounting for the contribution of the Cosserat rot...
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| [21] | | Multi-scale modeling of the chloride diffusivity and the elasticity of Portland cement paste, Mohamad Achour, Francois Bignonnet, Jean Francois Barthelemy, Emmanuel Roziere, Ouali Amiri, Construction and Building Materials, Vol. 234, number 117124, issue 9 (2020), doi:10.1016/j.conbuildmat.2019.117124
| The multi scale modeling of Portland cement paste is addressed to predict simultaneously its stiffness and its effective diffusion coefficient of chloride ions. The heterogeneity of cement paste is handled thanks to a hierarchy of Eshelby based homogenization schemes within the framework of micromechanics. The same microstructure description is used for both mechanical and transport properties. In...
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| [22] | | Microstructural evolution of remolded clay related to creep, Dan Zhao, Qian Feng Gao, Mahdia Hattab, Pierre Yves Hicher, Zhen Yu Yin, Transportation Geotechnics, Vol. 24, number 100367, issue 5 (2020), doi:10.1016/j.trgeo.2020.100367
| The aim of this study is to understand the local mechanisms related to creep behavior of a typical clay under triaxial loading. The investigation concerns both normally consolidated and overconsolidated specimens of remolded kaolin clay. The macroscopic results showed that both dilatancy and contractancy could occur during creep depending mainly on the clay behavior prior to the creep test. The ma...
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| [23] | | Model reduction in computational homogenization for transient heat conduction, A. Waseem, T. Heuze, L. Stainier, M. G.D. Geers, V. G. Kouznetsova, Computational Mechanics, Vol. 65, issue 1, pp. 249-266 (2020), doi:10.1007/s00466-019-01767-3
| This paper presents a computationally efficient homogenization method for transient heat conduction problems. The notion of relaxed separation of scales is introduced and the homogenization framework is derived. Under the assumptions of linearity and relaxed separation of scales, the microscopic solution is decomposed into a steady state and a transient part. Static condensation is performed to ob...
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| [24] | | A Dynamic Bayesian Network framework for spatial deterioration modelling and reliability updating of timber structures subjected to decay, Thanh Binh Tran, Emilio Bastidas-Arteaga, Younes Aoues, Engineering Structures, Vol. 209, number 110301, issue 9 (2020), doi:10.1016/j.engstruct.2020.110301
| Reliability assessment of existing timber structures subjected to deterioration processes is an important task to evaluate their serviceability and safety levels. Towards this aim, data collected after inspection campaigns are often used for updating structural reliability and planning future maintenance/inspection activities. Under natural conditions, timber decay involves a large number of uncer...
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| [25] | | Magnetic Pulse Welding and Spot Welding with Improved Coil Effciency-Application for DissimilarWelding of Automotive Metal Alloys, Chady Khalil, Surendar Marya, Guillaume Racineux, Journal of Manufacturing and Materials Processing, Vol. 4, number 69, issue 3 (2020), doi:10.3390/jmmp4030069
| Lightweight structures in the automotive and transportation industry are increasingly researched. Multiple materials with tailored properties are integrated into structures via a large spectrum of joining techniques. Welding is a viable solution in mass scale production in an automotive sector still dominated by steels, although hybrid structures involving other materials like aluminum are becomin...
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| [26] | | Study of Residual Stresses in Additively Manufactured Ti-6Al-4V by Neutron Diffraction Measurements, David Gloaguen, Baptiste Girault, Bruno Courant, Pierre Antoine Dubos, Marie Jose Moya, Francois Edy, Joana Rebelo Kornmeier, Metallurgical and Materials Transactions A Physical Metallurgy and Materials Science, Vol. 51, issue 2, pp. 951-961 (2020), doi:10.1007/s11661-019-05538-w
| Neutron diffraction is a powerful non destructive volumetric evaluation method for the analysis of the internal stress state in components processed by laser powder bed fusion (LPBF). High cooling rates and heterogeneous distribution of temperature during additive manufacturing lead to large residual stress fields. Residual stresses developed during the building process have unquestionably an impo...
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| [27] | | Composite repair system for corroded metallic pipelines: an overview of recent developments and modelling, S. Budhe, M. D. Banea, S. de Barros, Journal of Marine Science and Technology Japan, Vol. 25, issue 4, pp. 1308-1323 (2020), doi:10.1007/s00773-019-00696-3
| Over the last few decades, polymeric composites have been increasingly used as repair material for corroded metallic pipelines, as it can restore the loading capacity and structural integrity of a damaged pipeline. Considerable researches have been carried out on the repair of corroded metallic pipes with fiber reinforced polymer based composites. Also, the repair methods have been continuously im...
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| [28] | | Cyclic volumetric strain accumulation for sand under drained simple shear condition, Ze Xiang WU, Zhen Yu YIN, Christophe DANO, Pierre Yves HICHER, Applied Ocean Research, Vol. 101, number 102200 (2020), doi:10.1016/j.apor.2020.102200
| Volumetric strain of a soil element surrounding the pile accumulated under the drained cyclic loading condition is one of major concerns in geotechnical engineering design. In this paper, twenty stress controlled drained simple shear tests, with 5000 cycles on Fontainebleau sand have been carried out, which aims to investigate four factors influencing cyclic accumulation behaviour: initial void ra...
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| [29] | | Vulnerability and costs of adaptation strategies for housing subjected to flood risks: Application to La Gueriniere France, Axel Creach, Emilio Bastidas-Arteaga, Sophie Pardo, Denis Mercier, Marine Policy, Vol. 117, number 103438 (2020), doi:10.1016/j.marpol.2019.02.010
| Coastal flooding along the Atlantic coast caused by Storm Xynthia killed 41 people. The location and configuration of residential housing were the main factors affecting the vulnerability of people to flooding. The French government responded by destroying buildings in the most flood prone areas and relocating residents to safer areas. This strategy attracted much criticism, in particular because ...
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| [30] | | Flowability characterization and enhancement of aluminium powders for additive manufacturing, S. Touze, M. Rauch, J. Y. Hascoet, Additive Manufacturing, Vol. 36, number 101462, issue 5 (2020), doi:10.1016/j.addma.2020.101462
| The present work aims at quantifying and enhancing the flowability of cohesive metal powders, in particular aluminium powders, for their use in Additive Manufacturing processes such as Laser Metal Deposition. A flowability criterion, the population dependent granular Bond number, is calculated for various metal powder samples, which are then tested with a funnel flowmeter under vibrational assista...
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| [31] | | Modeling the effect of wetting on the mechanical behavior of crushable granular materials, Carlos Ovalle, Pierre Yves Hicher, Geoscience Frontiers, Vol. 11, issue 2, pp. 487-494 (2020), doi:10.1016/j.gsf.2019.06.009
| It is well known that the compressibility of crushable granular materials increases with the moisture content, due to the decrease of particle strength in a humid environment. An existing approach to take into account the effect of grain breakage in constitutive modeling consists in linking the evolution of the grain size distribution to the plastic work. But how the material humidity can affect t...
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| [32] | | An experimental investigation on the correlation between the aggregate size effect and the structural size effect, Ran Zhu, Syed Yasir Alam, Ahmed Loukili, Engineering Fracture Mechanics, Vol. 234, number 107101, issue 1 (2020), doi:10.1016/j.engfracmech.2020.107101
| Concrete failure properties are significantly affected when the size of the structure changes. This size effect which is due to the presence of fracture process zone led by the aggregate size, has been studied in the literature only for a given concrete, however, the role of aggregate size on the size effect parameters is not clear. This paper presents an original experimental study where both the...
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| [33] | | Development of a micro-mechanical model for the determination of damage properties of cement pastes, Abderrahmane Rhardane, Frederic Grondin, Syed Yasir Alam, Construction and Building Materials, Vol. 261, number 120514 (2020), doi:10.1016/j.conbuildmat.2020.120514
| Demand on low carbon concrete for building increases in many countries. However, workers in construction sites are often confronted with early cracking risks in concrete when new cement mixtures are used. Indeed, new chemical additions are mixed with cement and mixtures are optimized in laboratories to reach the target performance for concrete. But, in site, the results are not exactly the same. I...
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| [34] | | The Hot Optimal Transportation Meshfree (HOTM) method for materials under extreme dynamic thermomechanical conditions, Hao Wang, Huming Liao, Zongyue Fan, Jiang Fan, Laurent Stainier, Xiaobai Li, Bo Li, Computer Methods in Applied Mechanics and Engineering, Vol. 364, number 112958, issue 4849 (2020), doi:10.1016/j.cma.2020.112958
| We present a monolithic incremental Lagrangian framework based on meshfree methods, the Hot Optimal Transportation Meshfree (HOTM) method, for a robust and efficient solution of the dynamic response of materials under extreme thermomechanical conditions, possibly involving extremely large deformation, phase transition and multiphase mixing. The HOTM method combines the Optimal Transportation Meshf...
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| [35] | | Model of bio-colonisation on mooring lines: Updating strategy based on a static qualifying sea state for floating wind turbines, Benjamin Decurey, Franck Schoefs, Anne Laure Barille, Thomas Soulard, Journal of Marine Science and Engineering, Vol. 8, number 108, issue 2 (2020), doi:10.3390/jmse8020108
| Bio colonisation affects the ageing of materials and the behaviour of offshore structures. Mooring systems and umbilicals belong to the family of slender bodies which are components sensitive to bio colonisation because of a change of dynamic behaviour due to shape, roughness and mass modifications. However, this stochastic process in time and space is hard to predict. The purpose is then twofold:...
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| [36] | | Assessment of the effectiveness of wood pole repair using FRP considering the impact of climate change on decay and hurricane risk, Eric Merschman, Abdullahi M. Salman, Emilio Bastidas-Arteaga, Yue Li, Advances in Climate Change Research, Vol. 11, issue 4, pp. 332-348 (2020), doi:10.1016/j.accre.2020.10.001
| Electric power distribution systems are vulnerable to disruption due to severe weather events, especially hurricanes. Such vulnerability is expected to increase over time due to the impact of climate change on hurricanes and the decay of wood poles that support the distribution lines. This study investigates the effectiveness of using fiber reinforced polymer (FRP) sleeve to reinforce wood poles s...
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| [37] | | Compaction Banding in High-Porosity Carbonate Rocks: 2. A Gradient-Dependent Plasticity Model, Youssouf Abdallah, Jean Sulem, Ioannis Stefanou, Journal of Geophysical Research Solid Earth, Vol. 125, number 219, issue 12 (2020), doi:10.1029/2020JB020610
| Based on the experimental study on Saint Maximin limestone presented in a companion paper (Abdallah et al., 2020), a gradient dependent plasticity model is developed to account for the key role of porosity heterogeneity in the formation and propagation of compaction bands. The constitutive law, developed in the frame of a micromorphic continuum theory, contains two hardening variables: the porosit...
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| [38] | | Experimental analysis of mechanical performance of glass fibre reinforced polyamide 6 under varying environmental conditions, Ivanna Pivdiablyk, Patrick Rozycki, Frederic Jacquemin, Laurent Gornet, Stephane Auger, Composite Structures, Vol. 245, number 112338, issue 9 (2020), doi:10.1016/j.compstruct.2020.112338
| The polyamide based composite materials are widely employed in various industrial domains. Along with the numerous advantages of these engineering materials, an important sensitivity to hygrothermal conditions represents a major drawback. Hence, this study aims to thoroughly evaluate the variation of physical and mechanical properties in moist and thermal environments of three stacking sequences. ...
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| [39] | | Effect of process parameters on track geometry, microstructural evolution on 316L stainless steel multi-layer clads, M. Manjaiah, J. Y. Hascoet, M. Rauch, Materials Science and Engineering B, Vol. 259, number 114583 (2020), doi:10.1016/j.mseb.2020.114583
| In the present work, the effect of process parameters such as laser power, scan speed and powder flow rate on the geometry and surface waviness of the bead during Laser Metal Deposition (LMD) was determined. A gas atomized powder of 316L stainless steel were employed, which were deposited on a stainless steel substrate at a rate of 2 kg/h. The experimental results indicated that the bead height, b...
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| [40] | | The use of superabsorbent polymers in high performance concrete to mitigate autogenous shrinkage in a large-scale demonstrator, Laurence De Meyst, Judy Kheir, Jose Roberto Tenorio Filho, Kim Van Tittelboom, Nele De Belie, Sustainability Switzerland, Vol. 12, number 4741, issue 11 (2020), doi:10.3390/su12114741
| High performance concrete (HPC) is a high strength concrete that undergoes a lot of early age autogenous shrinkage (AS). If shrinkage is restrained, then micro cracks arise and threaten the durability of the structure. Superabsorbent polymers (SAPs) can reduce/mitigate the autogenous shrinkage, due to their promising application as internal curing agents. In this paper, large scale demonstrators w...
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| [41] | | Polynomial chaos expansion for lifetime assessment and sensitivity analysis of reinforced concrete structures subjected to chloride ingress and climate change, Emilio Bastidas-Arteaga, Charbel Pierre El Soueidy, Ouali Amiri, Phu Tho Nguyen, Structural Concrete, Vol. 21, issue 4, pp. 1396-1407 (2020), doi:10.1002/suco.201900398
| Chloride induced corrosion is one of the main causes leading to the lifetime reduction of reinforced concrete (RC) structures in marine environments or subjected to de icing salts. Modeling chloride ingress into concrete in a comprehensive way is therefore a crucial task to evaluate corrosion initiation risk and carry out preventive maintenance. Nevertheless, this comprehensive modeling is a chall...
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| [42] | | Applications of virtual data in subsea inspections, Michael O'Byrne, Bidisha Ghosh, Franck Schoefs, Vikram Pakrashi, Journal of Marine Science and Engineering, Vol. 8, number 328, issue 5 (2020), doi:10.3390/JMSE8050328
| This paper investigates the role that virtual environments can play in assisting engineers and divers when performing subsea inspections. We outline the current state of research and technology that is relevant to the development of effective virtual environments. Three case studies are presented demonstrating how the inspection process can be enhanced through the use of virtual data. The first ca...
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| [43] | | Validation of bridge health monitoring system using temperature as a proxy for damage, Eugene J. OBrien, Barbara Heitner, Ales Znidaric, Franck Schoefs, Guillaume Causse, Thierry Yalamas, Structural Control and Health Monitoring, Vol. 27, issue 9 (2020), doi:10.1002/stc.2588
| In this paper, damage indicators are presented for bridges based on measured data collected under uncontrolled traffic conditions. The test bridge considered is a small stiff concrete culvert with low dynamics, making it suboptimal for monitoring with accelerometers. Largely static strain responses are measured, with the variability in the vehicle weights and configurations addressed by handling t...
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| [44] | | Modelling the poroelastoplastic behaviour of soils subjected to internal erosion by suffusion, Quentin Rousseau, Giulio Sciarra, Rachel Gelet, Didier Marot, International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 44, issue 1, pp. 117-136 (2020), doi:10.1002/nag.3014
| Granular soils subjected to seepage flow may suffer suffusion, ie, a selective internal erosion. Extending the classical approach of poromechanics, we deduce a new form of the Clausius Duhem inequality accounting for dissipation due to suffusion, and we deduce restrictions on the constitutive laws of the soil. We suggest (a) a possible coupling between the seepage forces and the suffusion kinetics...
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| [45] | | Novel green plants extract as corrosion inhibiting coating for steel embedded in concrete, Ahmed A. ElShami, Stephanie Bonnet, Mohamed Hussein Makhlouf, A. Khelidj, N. Leklou, Pigment and Resin Technology, Vol. 49, issue 6, pp. 501-514 (2020), doi:10.1108/PRT-09-2019-0078
| Purpose: This paper aims to evaluate the ability of Aubepine and Molokhia extract, obtained by cathodic electrochemical treatment (CET), to protect steel rebar against attack by chloride ions in environment of reinforced concrete marine structures. The effect of Aubepine and Molokhia extract was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization technique...
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| [46] | | On the applicability of Taylor's theory to the underwater blast response of composite plates, Y. P. Sone Oo, H. Le Sourne, O. Dorival, International Journal of Impact Engineering, Vol. 145, number 103677, issue 4 (2020), doi:10.1016/j.ijimpeng.2020.103677
| The response of a plane, air backed plate attached to a rigid baffle when subjected to an underwater plane shock wave is investigated numerically and analytically. The numerical simulation takes into account a full three dimensional fluid model involving water cavitation effects. Different numerical models are employed and validated by comparing against various experimental results from the litera...
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| [47] | | Experimental full field analysis for dynamic fracture of elastomer membranes, T. Corre, M. Coret, E. Verron, B. Leble, F. Le Lay, International Journal of Fracture, Vol. 224, issue 1, pp. 83-100 (2020), doi:10.1007/s10704-020-00447-1
| Crack speed prediction in elastomer membranes under large strain (more than 150%) remains a delicate question which necessitates coupled experimental theoretical investigations. In order to compare experimental results with theoretical approaches but also to improve the understanding of dynamic crack propagation in soft materials, a crucial step is the measurement and analysis of kinematic and ene...
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| [48] | | Bayesian assessment of the effects of cyclic loads on the chloride ingress process into reinforced concrete, Henriette Marlaine Imounga, Emilio Bastidas-Arteaga, Rostand Moutou Pitti, Serge Ekomy Ango, Xiao Hui Wang, Applied Sciences Switzerland, Vol. 10, number 2040, issue 6 (2020), doi:10.3390/app10062040
| Chloride induced corrosion and load induced concrete cracking affect the serviceability and safety of reinforced concrete (RC) structures. Once these phenomena occur simultaneously, the prediction of RC structures' lifetimes becomes a major challenge. The objective of this paper is to propose a methodology to evaluate the effect of loading and cracking on the mechanism of chloride ion penetration ...
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| [49] | | Temperature effect on strain-induced phase transformation of cobalt, Pierre Antoine Dubos, Jamal Fajoui, Nadjib Iskounen, Michel Coret, Saurabh Kabra, Joe Kelleher, Baptiste Girault, David Gloaguen, Materials Letters, Vol. 281, number 128812, issue 6 (2020), doi:10.1016/j.matlet.2020.128812
| Thermal and mechanical effects on the phase transformation of polycrystalline two phase HCP/FCC cobalt have been studied in coupled and decoupled ways. This experimental work has involved in situ X ray and neutron diffraction analysis to determine phase proportions under various thermomechanical conditions, those which are not referenced in the litterature. A quantitative analysis is proposed to b...
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| [50] | | Consolidation and compression of deformable impregnated fibrous reinforcements: Experimental study and modeling of flow-induced deformations, A. Hautefeuille, S. Comas-Cardona, C. Binetruy, Composites Part A Applied Science and Manufacturing, Vol. 131, number 105768, issue 4 (2020), doi:10.1016/j.compositesa.2020.105768
| Continuous fiber reinforced thermoplastic composites can be produced by compression or consolidation processes at a temperature above the thermoplastic melting temperature. High production rates or high fluidity thermoplastic (TP HF) viscosities can lead to large in plane displacements of the fibrous network during the process. The same mechanisms appear when viscous toughened thermosets resins ar...
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| [51] | | A condition-based dynamic segmentation of large systems using a Changepoints algorithm: A corroding pipeline case, Rafael Amaya-Gomez, Emilio Bastidas-Arteaga, Franck Schoefs, Felipe Munoz, Mauricio Sanchez-Silva, Structural Safety, Vol. 84, number 101912, issue 1 (2020), doi:10.1016/j.strusafe.2019.101912
| Large structures are systems composed by a significant number of components with parallel or series distributions. How these components fail and interact, aggravate the complexity of the main structure reliability calculation. Some methods commonly proposed to reduce this complexity by dividing the system into segments of similar properties using dynamic or static approaches. Dynamic segmentations...
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| [52] | | Spatial identification of exposure zones of concrete structures exposed to a marine environment with respect to reinforcement corrosion, Lucas Bourreau, Laurent Gaillet, Veronique Bouteiller, Franck Schoefs, Benoit Thauvin, Julien Schneider, Samuel Naar, Structure and Infrastructure Engineering, Vol. 16, issue 2, pp. 346-354 (2020), doi:10.1080/15732479.2019.1655072
| In marine environments structures are subjected to a variety of environmental conditions which govern the degradation processes. For reinforced concrete structures these degradation processes (chloride ingress and corrosion) are driven by the availability of oxygen and humidity. Due to the random process of tidal movements it is difficult to determine the spatial boundaries of the major exposure z...
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| [53] | | Study on the stiffness degradation and damping of pile foundations under dynamic loadings, Zheng Li, Sandra Escoffier, Panagiotis Kotronis, Engineering Structures, Vol. 203, number 109850, issue 5 (2020), doi:10.1016/j.engstruct.2019.109850
| This paper presents a comprehensive study on the different behaviour of batter and vertical pile foundations in terms of stiffness degradation and damping properties under dynamic loadings. Firstly, dynamic centrifuge tests were carried out and the variations of translational/rotational stiffness and the associated damping properties were identified from a series of hysteretic loops. Results show ...
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| [54] | | Effectiveness of corrosion inhibitors in simulated concrete pore solution, Ahmed Elshami, Stephanie Bonnet, Abdelhafid Khelidj, Latefa Sail, European Journal of Environmental and Civil Engineering, Vol. 24, issue 13, pp. 2130-2150 (2020), doi:10.1080/19648189.2018.1500309
| Steel embedded in concrete is normally in a passive state against corrosion due to a thin iron oxide layer that forms on the steel surface and remains stable in the high alkaline environment of the concrete. This protective film must be destroyed (depassivation) and this can be mainly done in two ways: by the attack of chlorides on the steel (seawater, de icing salt, unwashed sea sand, admixtures,...
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| [55] | | Process selection charts based on economy and environment: subtractive or additive manufacturing to produce structural components of aircraft, C. Hodonou, O. Kerbrat, M. Balazinski, M. Brochu, International Journal on Interactive Design and Manufacturing, Vol. 14, issue 3, pp. 861-873 (2020), doi:10.1007/s12008-020-00663-y
| Multi criteria decision making methods are commonly used to rank manufacturing processes based on weighted economic and environmental criteria. The weighting process can be challenging, especially at early design stages where costs and environmental data are not precisely defined. In addition, for weights resulting in equivalent alternatives, no conclusion can be drawn when costs and environmental...
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| [56] | | Long-Term Stochastic Modeling of Sheet Pile Corrosion in Coastal Environment from On-Site Measurements, Franck Schoefs, Jerome Boero, Bruno Capra, Journal of Marine Science and Engineering, Vol. 8, number 70, issue 2 (2020), doi:10.3390/jmse8020070
| Optimization of maintenance and design of coastal steel infrastructure needs for long term predictive degradation models. The phenomenon of corrosion in the offshore and coastal environment is very complex due to the stochastic and changing nature of the environment (temperature, water chemical properties) and the multiple involved processes in competition. In the GEROM French project, the objecti...
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| [57] | | Sensitivity analysis of the transient heat and moisture transfer in a single layer wall, Ines Othmen, Philippe Poullain, Nordine Leklou, European Journal of Environmental and Civil Engineering, Vol. 24, issue 13, pp. 2211-2229 (2020), doi:10.1080/19648189.2018.1500947
| The determination of the energy consumption of a building requires the computation of the coupled heat and mass transfers inside the wall. The existing models require the determination of the hygrothermal properties of the materials, and of the boundary and initial conditions, prior to computing numerically the temperature and vapour fluxes and the energy and mass balance of the building. However,...
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| [58] | | Optimization of Condition-Based Maintenance of Wood Utility Pole Network Subjected to Hurricane Hazard and Climate Change, Abdullahi M. Salman, Babak Salarieh, Emilio Bastidas-Arteaga, Yue Li, Frontiers in Built Environment, Vol. 6, number 40 (2020), doi:10.3389/fbuil.2020.00073
| Electric power distribution systems that link the bulk power grid (generation and transmission systems) to customers are the leading cause of power outages due to their vulnerability to extreme wind events, especially hurricanes. The strength of the wood poles that typically support the distribution lines also deteriorate over time. The vulnerability of the poles is expected to increase due to the...
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| [59] | | DEF damage in heat cured mortars made of recycled concrete sand aggregate, Alexandre Yammine, Nordine Leklou, Marta Choinska, Francois Bignonnet, Jean Michel Mechling, Construction and Building Materials, Vol. 252, number 119059, issue 1 (2020), doi:10.1016/j.conbuildmat.2020.119059
| The purpose of this study is to investigate DEF development in heat cured mortars made of recycled sand aggregate with sodium sulphate or gypsum plaster powder additions to stimulated DEF development. Ten different formulations have been studied for more than a year. DEF damage comparison between different mortars made of RCA sand and standardised siliceous sand is made with or without sulphate ad...
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| [60] |  | Numerical Modeling of Interply Adhesion in Composite Forming of Viscous Discontinuous Thermoplastic Prepregs, Numerical modeling of interply adhesion in composite forming of viscous discontinuous thermoplastic prepregs, Paris Dilip Mulye, Julie Hemmer, Lionel Morancay, Christophe Binetruy, Adrien Leygue, Sebastien Comas-Cardona, Pierre Pichon, Damien Guillon, Procedia Manufacturing, Procedia Manufacturing, Composites Part B Engineering, Vol. 47, issue , , 1, pp. 71-73 (2020), doi:10.1016/j.promfg.2020.04.135, 10.1016/j.promfg.2020.04.135, 10.1016/j.compositesb.2020.107953
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| [61] | | Size effect on the contribution of the aggregate interlock mechanism in reinforced concrete beams without shear reinforcement, Ahmed Belbachir, Syed Yasir Alam, Mohammed Matallah, Ahmed Loukili, European Journal of Environmental and Civil Engineering, Vol. 24, issue 9, pp. 1363-1380 (2020), doi:10.1080/19648189.2018.1471007
| The shear strength of reinforced concrete beam remains an issue of great interest in structural engineering. For structural members without transverse reinforcements, the application of simple models (Strut and tie model, for instance) results an unsafe design. Also, most of the design codes are based on empirical formulas to design such members. These formulas are not adapted for some practical s...
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| [62] | | Detection and measurement of matrix discontinuities in uhpfrc by means of distributed fiber optics sensing, Bartomiej Sawicki, Antoine Bassil, Eugen Bruhwiler, Xavier Chapeleau, Dominique Leduc, Sensors Switzerland, Vol. 20, number 3883, issue 14 (2020), doi:10.3390/s20143883
| Following the significant improvement in their properties during the last decade, Distributed Fiber Optics sensing (DFOs) techniques are nowadays implemented for industrial use in the context of Structural Health Monitoring (SHM). While these techniques have formed an undeniable asset for the health monitoring of concrete structures, their performance should be validated for novel structural mater...
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| [63] | | Enriched continuum for multi-scale transient diffusion coupled to mechanics, Abdullah Waseem, Thomas Heuze, Laurent Stainier, Marc G.D. Geers, Varvara G. Kouznetsova, Advanced Modeling and Simulation in Engineering Sciences, Vol. 7, number 2823, issue 1 (2020), doi:10.1186/s40323-020-00149-2
| In this article, we present a computationally efficient homogenization technique for linear coupled diffusionmechanics problems. It considers a linear chemo mechanical material model at the fine scale, and relies on a full separation of scales between the time scales governing diffusion and mechanical phenomena, and a relaxed separation of scales for diffusion between the matrix and the inclusion....
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| [64] | | Measurement and prediction of residual strains and stresses during the cooling of a glass fibre reinforced PA66 matrix composite, Mael Peron, Frederic Jacquemin, Pascal Casari, Gilles Orange, Jerome Bikard, Jean Luc Bailleul, Nicolas Boyard, Composites Part A Applied Science and Manufacturing, Vol. 137, number 106039 (2020), doi:10.1016/j.compositesa.2020.106039
| The forming process of thermoplastic composites inevitably leads to the development of residual stresses. This study proposes a model to predict the residual stresses at the ply scale of a thermoplastic composite laminate. It accounts for the heat transfer, crystallization kinetics and mechanical behaviour of the laminate. The model is applied to the cooling of a polyamide 66 (PA66) matrix reinfor...
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| [65] | | Efficient FFT-based upscaling of the permeability of porous media discretized on uniform grids with estimation of RVE size, Francois Bignonnet, Computer Methods in Applied Mechanics and Engineering, Vol. 369, number 113237, issue 5 (2020), doi:10.1016/j.cma.2020.113237
| An efficient numerical scheme at the crossroad of Fourier based methods and boundary element methods is derived to upscale the permeability of porous media from Stokes flow within the pore space. The method relies on a variational framework which involves trial force fields and the Green function. The discretization of the trial force fields is carried out on a uniform grid, which allows for the u...
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| [66] | | Hygroscopic stresses in asymmetric biocomposite laminates submitted to various relative humidity conditions, Mael Peron, Amandine Celino, Frederic Jacquemin, Antoine Le Duigou, Composites Part A Applied Science and Manufacturing, Vol. 134, number 105896 (2020), doi:10.1016/j.compositesa.2020.105896
| Hygroscopicity of natural fibers influences biocomposites lifetime submitted to wet environments. The present study investigates the hygroscopic stresses state in a flax fiber reinforced polypropylene composite when submitted to different environmental conditions from the dried state through various relative humiditiy (RH) to immersion. An experimental and modelling strategy is applied on asymmetr...
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| [67] | | A two-scale probabilistic time-dependent fatigue model for offshore steel wind turbines, Benjamin Rocher, Franck Schoefs, Marc Francois, Arnaud Salou, Anne Laure Caouissin, International Journal of Fatigue, Vol. 136, number 105620, issue 5 (2020), doi:10.1016/j.ijfatigue.2020.105620
| Due to both wave and wind fluctuations, the steel foundations of offshore wind turbines are highly submitted to fatigue. To date, current methods of fatigue design proposed in the regulations are not devoted to structural optimization and to the consideration of time variant hazards. We propose hence an incremental two scale model of damage in order to follow the time evolution of the damage. This...
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| [68] | | Experimental study and modelling of the phase transformation of Zircaloy-4 alloy under high thermal transients, T. Jailin, N. Tardif, J. Desquines, M. Coret, M. C. Baietto, V. Georgenthum, Materials Characterization, Vol. 162, number 110199, issue 1 (2020), doi:10.1016/j.matchar.2020.110199
| Dilatometry tests were performed to study the phase transformation kinetic of nuclear fuel claddings made of Zircaloy 4 upon fast heating rates (up to 2000 °C/s). These tests highlighted that from equilibrium to 500 °C/s the temperature at which the transformation starts shifts towards higher temperatures with increasing heating rates. Above 500 °C/s, no impact of the heating rate was observed. Th...
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| [69] | | Electromagnetic flanging: from elementary geometries to aeronautical components, Cheikh Tidiane Sow, Gregoire Bazin, Thomas Heuze, Guillaume Racineux, International Journal of Material Forming, Vol. 13, issue 3, pp. 423-443 (2020), doi:10.1007/s12289-020-01547-y
| Aeronautical companies are manufacturing many components of small (less than 200 mm) and medium (between 200 mm and 1000 mm) sizes by flexforming. In order to diversify the production facilities of these components, these companies are interested in evaluating the ability of electromagnetic forming processes to produce small parts. This paper describes the design of a set of experiments of electro...
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| [70] | | Multidirectional flow apparatus for assessing soil internal erosion susceptibility, Didier Marot, Dinh Minh Tran, Fateh Bendahmane, Van Thao Le, Geotechnical Testing Journal, Vol. 43, issue 6, pp. 1481-1498 (2020), doi:10.1520/GTJ20190254
| Suffusion is a selective erosion of fine particles within the matrix of coarse soil particles under the effect of seepage flow. Suffusion can induce important modifications in the hydraulic and mechanical characteristics of the soil. At the scale of an earth structure, the flow direction can vary, and the soils that compose the structure and its foundations can be heterogeneous. Thus, to ensure th...
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| [71] | | Measurement of the local water content of an epoxy adhesive by fiber optic sensor based on Fresnel reflection, Romain Grangeat, Marion Girard, Cyril Lupi, Dominique Leduc, Frederic Jacquemin, Mechanical Systems and Signal Processing, Vol. 141, number 106439, issue August (2020), doi:10.1016/j.ymssp.2019.106439
| This article presents an application of a fiber optic sensor based on Fresnel reflection for the measurement of local water content within an epoxy adhesive immersed in water. The water content is directly calculated from the measured refractive index with the help of a Maxwell Garnett model which consider spherical water inclusions inside an epoxy matrix. No calibration is needed. Three samples w...
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| [72] | | Magnetic pulse welding of metallic tubesexperimental investigation and numerical modelling, Rishabh Shotri, Guillaume Racineux, Amitava De, Science and Technology of Welding and Joining, Vol. 25, issue 4, pp. 273-281 (2020), doi:10.1080/13621718.2019.1685066
| Magnetic pulse welding (MPW) provides an efficient route to join overlapping metallic tubes by the application of a high magnitude electromagnetic (EM) force. The process is rapidly transient in nature with little scope to comprehend and monitor the evolution of the joint by experimental means. A comprehensive computational process model is presented here to analyse the transient nature of EM fiel...
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| [73] | | Further development of a laboratory procedure to assess the mechanical performance of cob, Theo Vinceslas, Erwan Hamard, Andry Razakamanantsoa, Fateh Bendahmane, Environmental Geotechnics, Vol. 7, issue 3, pp. 200-207 (2020), doi:10.1680/jenge.17.00056
| Cob is a vernacular earth building technique which has encountered renewed interest for its low environmental impact compared to conventional construction materials. Relevant mechanical characterisation is essential for cob building structure design and calculation. This paper presents an improved laboratory procedure to better the characterisation of representative cob samples. Samples prepared b...
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| [74] | | Structure-properties relationships of moisturized sandwich composite materials under extreme temperature conditions (fire resistance), Vincent Legrand, Luan TranVan, Pascal Casari, Frederic Jacquemin, Composite Structures, Vol. 235, number 111774, issue 38 (2020), doi:10.1016/j.compstruct.2019.111774
| Thermo mechanical properties of sandwich composite materials used in marine applications have been analyzed as a function of the burning duration with various moisture contents. Dry and wet coupons with glass reinforced polymer skins and balsa wood core (saturated with water) were submitted to fire. The mass loss kinetics and the post combustion mechanical stiffness and strength were recorded. Fac...
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| [75] | | Reliability of inflatable structures: challenge and first results, Jean Christophe Thomas, Franck Schoefs, Colin Caprani, Benjamin Rocher, European Journal of Environmental and Civil Engineering, Vol. 24, issue 10, pp. 1533-1557 (2020), doi:10.1080/19648189.2018.1474807
| Inflatable structures are part of the family of tensioned textile membrane structures. The operating principle is common for all these type of structures: the stiffness of the structure relies on the tensioning of the membrane, which is generally provided by a mechanical device in the case of tensile structures, and by setting the pressure in the case of pneumatic structures. These structures are ...
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| [76] | | Mechanical properties of optical fiber strain sensing cables under -ray irradiation and large strain influence, Arianna Piccolo, Sylvie Delepine-Lesoille, Etienne Friedrich, Shasime Aziri, Yann Lecieux, Dominique Leduc, Sensors Switzerland, Vol. 20, number 696, issue 3 (2020), doi:10.3390/s20030696
| Optical fiber strain sensing cables are widely used in structural health monitoring; however, the impact of a harsh environment on them is not assessed despite the huge importance of the stable performances of the monitoring systems. This paper analyzes (i) the impact of the different constituent layers on the behavior of a strain sensing cable whose constitutive materials are metal and polyamide,...
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| [77] | | An efficient finite element based multigrid method for simulations of the mechanical behavior of heterogeneous materials using CT images, Xiaodong Liu, Julien Rethore, Marie Christine Baietto, Philippe Sainsot, Antonius Adrianus Lubrecht, Computational Mechanics, Vol. 66, issue 6, pp. 1427-1441 (2020), doi:10.1007/s00466-020-01909-y
| X ray tomography techniques give researchers the full access to material inner structures. With such ample information, employing numerical simulation on real material images becomes more and more common. Material behavior, especially, of heterogeneous materials, e.g. polycrystalline, composite, can be observed at the microscopic scale with the computed tomography (CT) techniques. In this work, an...
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| [78] | | Analysis of Failure Pressure of Defective Pipes Repaired with Composite Systems Considering the Plastic Deformation of Pipe, S. Budhe, M. D. Banea, S. de Barros, Journal of the Institution of Engineers India Series C, Vol. 101, issue 6, pp. 929-936 (2020), doi:10.1007/s40032-020-00612-4
| Wrapping a composite material around the wall loss defective pipe is a well known practice in pipeline rehabilitation as per guidelines provided by the design standards ISO/TS 24817 and ASME PCC 2. This work presents an analytical model to evaluate the composite repair thickness for a damaged pipeline with accounting for the plastic deformation and compare it with the results of design codes and n...
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| [79] | | Combination Effect of Limestone Filler and Slag on Delayed Ettringite Formation in Heat-Cured Mortar, Walid Deboucha, Nordine Leklou, Abdelhafid Khelidj, Olivier Ple, U. Johnson Alengaram, Journal of Materials in Civil Engineering, Vol. 32, number 20.1, issue 3 (2020), doi:10.1061/(ASCE)MT.1943-5533.0003020
| The present paper analyzes the combination effect of slag and limestone filler on the expansion caused by delayed ettringite formation (DEF). Tests were carried out on heat cured ternary cement mortars with various replacement levels of cement by both limestone filler and slag (15%, 25%, and 45%). The expansion of heat cured cement mortars was evaluated and verified by measuring their length chang...
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| [80] | | Prediction of the burst pressure for defective pipelines using different semi-empirical models, S. Budhe, M. D. Banea, S. de Barros, Frattura Ed Integrita Strutturale, Vol. 14, issue 52, pp. 137-147 (2020), doi:10.3221/IGF-ESIS.52.12
| The main aim of this work is to predict the theoretical burst pressure of defective pipelines using different semi empirical models and compare them with the hydrostatic test results. A new methodology was formulated with accounting for a minimum thickness (weakest section of the pipe) over the length of the pipe to predict the most conservative burst pressure. With a simple analytical expression,...
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| [81] | | Decision-based territorial life cycle assessment for the management of cement concrete demolition waste, Marjan Mousavi, Anne Ventura, Nicolas Antheaume, Waste Management and Research, Vol. 38, issue 12, pp. 1405-1419 (2020), doi:10.1177/0734242X20965676
| Existing territorial life cycle assessments (LCAs) consider all activities in a given geographical area, defined as the foreground system, but cannot lead to operational decisions. In product scale LCA, the foreground system is defined as the part of the system directly controlled by an actor and is thus more adapted to compare possible scenarios within a decision perimeter. The present paper uses...
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| [82] | | A parametric study on the dynamic ultimate strength of a stiffened panel subjected to wave- and whipping-induced stresses, George Jagite, Fabien Bigot, Quentin Derbanne, Sime Malenica, Herve Le Sourne, Patrice Cartraud, Ships and Offshore Structures, Vol. 16, issue 9, pp. 1025-1039 (2020), doi:10.1080/17445302.2020.1790985
| Although it is well known that the slamming induced whipping can significantly increase the structural loading of ships, its consequence on the hull girder's collapse is still unclear. Moreover, the whipping induced stresses are having a higher frequency than the wave induced stresses. Hence some doubts are cast on the probability that the dynamic effects may provide additional strength reserves. ...
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| [83] | | Exfoliation Corrosion Impact on Microstructure, Mechanical Properties, and Fatigue Crack Growth of Aeronautical Aluminum Alloy, Abdessamad Brahami, Jamel Fajoui, Benattou Bouchouicha, Journal of Failure Analysis and Prevention, Vol. 20, issue 1, pp. 197-207 (2020), doi:10.1007/s11668-020-00815-y
| In this paper, quantitative investigation of localized corrosion, in particular, exfoliating corrosion (EXCO) of aluminum alloys 2024 T3 and 7075 T6, is carried out. The mechanism of EXCO focusing on the effects of the combination of materials/environment/mechanical stress was also considered. An optical microscope (MO) and a scanning electron microscope coupled with a energy dispersive spectrosco...
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| [84] | | The Discontinuous Galerkin Material Point Method for variational hyperelasticplastic solids, Adrien Renaud, Thomas Heuze, Laurent Stainier, Computer Methods in Applied Mechanics and Engineering, Vol. 365, number 112987, issue 1 (2020), doi:10.1016/j.cma.2020.112987
| The Discontinuous Galerkin Material Point Method (DGMPM) presented in Renaud et al. (2018)[14] is based on the discretization of a solid domain by means of particles in a background mesh. Owing to the employment of the discontinuous Galerkin approximation on the grid, the weak form of a hyperbolic system involves fluxes that are computed at cell interfaces by means of an approximate Riemann solver...
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| [85] | | Thermo-mechanical behavior of Zircaloy-4 claddings under simulated post-DNB conditions, T. Jailin, N. Tardif, J. Desquines, P. Chaudet, M. Coret, M. C. Baietto, V. Georgenthum, Journal of Nuclear Materials, Vol. 531, number 151984, issue 2 (2020), doi:10.1016/j.jnucmat.2020.151984
| The thermo mechanical behavior of Zircaloy 4 claddings under simulated post DNB RIA conditions was investigated. Around twenty experiments were performed in simulated post DNB conditions, i.e. creep ballooning tests with heating rates greater than 1000 °C/s. Two different levels of pressure of 7 and 11 bar were tested for temperatures of interest ranging from 840 °C to 1020 °C. A complex creep beh...
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| [86] | | Microscopically informed upscale approach of modelling damage in mortar by considering matrix-to-grain interface and grain micro-fracture characteristics, Abderrahmane Rhardane, Syed Yasir Alam, Frederic Grondin, Theoretical and Applied Fracture Mechanics, Vol. 109, number 102725, issue 2 (2020), doi:10.1016/j.tafmec.2020.102725
| Multiscale modelling of damage in cement based materials is mostly done through a downscale approach and constitutive laws are developed based on quasi brittleness or cracking process within these materials. However, the microscopic characteristics of each phase in these materials need to be considered in order to accurately predict the durability. This article presents an experimentally validated...
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| [87] | | Sources of uncertainties for total chloride profile measurements in concrete: quantization and impact on probability assessment of corrosion initiation, Stephanie Bonnet, Franck Schoefs, Manuela Salta, European Journal of Environmental and Civil Engineering, Vol. 24, issue 2, pp. 232-247 (2020), doi:10.1080/19648189.2017.1375997
| Reliability methods have proved in the past that they were rational aid tools for the safety assessment of existing structures, within which some uncertainties occurred. Condition assessment is usually carried out using on site measurements, which are assumed perfect. However, it is now accepted that some significant uncertainties may affect the assessment of material properties using semi destruc...
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| [88] | | Effect of compaction on multi-physical properties of hemp-black liquor composites, Marie Viel, Florence Collet, Christophe Lanos, Journal of Materials Research and Technology, Vol. 9, issue 2, pp. 2487-2494 (2020), doi:10.1016/j.jmrt.2019.12.079
| This study aims to develop fully agro based insulating building materials. Previous studies investigated several types of aggregates and binders to develop composites. The thermal conductivity of such composite appears mainly impacted by the density. This paper aims to investigate the effect of density on various multi physical properties of composites, using the same formulation and adjusting the...
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| [89] | | A persistent modal plastic model for instabilities in Al-Mg alloys with 1D application, Baptiste Reyne, Nicolas Moes, Pierre Yves Manach, International Journal of Plasticity, Vol. 131, number 102713, issue 16 (2020), doi:10.1016/j.ijplas.2020.102713
| Several alloys are subjected to plastic instabilities that are due to the interaction between dislocations and solutes. Among them, Luders bands and the Portevin Le Chatelier (PLC) effect are of particular interest as they complicate the industrial use of many commercial alloys. They involve a repeated softening that results in mesh sensitivity and a bad conditioning during simulations. Existing m...
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| [90] | | Influence of the lateral confinement on the transverse mechanical behavior of tows and quasi-unidirectional fabrics: Experimental and modeling investigations of dry through-thickness compaction, Julie Hemmer, Anne Sophie Lectez, Erwan Verron, Jean Michel Lebrun, Christophe Binetruy, Sebastien Comas-Cardona, Journal of Composite Materials, Vol. 54, issue 23, pp. 3261-3274 (2020), doi:10.1177/0021998320912809
| Fibrous textiles are subjected to dry through thickness compaction during most of the composites manufacturing processes. Usual tow models implemented in textile numerical simulations do not reproduce the tow widening occurring during the compaction. Nonetheless, this widening (that can reach 10%) would influence the internal microstructure of the considered fabric and its mechanical behavior. Thi...
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| [91] | | A stable extended/generalized finite element method with Lagrange multipliers and explicit damage update for distributed cracking in cohesive materials, Zoltan Csati, Nicolas Moes, Thierry J. Massart, Computer Methods in Applied Mechanics and Engineering, Vol. 369, number 113173, issue B7 (2020), doi:10.1016/j.cma.2020.113173
| A flexible, general and stable mixed formulation is developed to model distributed cracking in cohesive grain based materials in the framework of the extended/generalized finite element method. The displacement field is discretized on each grain separately, and the continuity of the displacement and traction fields across the interfaces between grains is enforced by Lagrange multipliers. The desig...
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| [92] | | Self-healing potential and phase evolution characterization of ternary cement blends, Mojtaba Mohammadi, Carol Youssef-Namnoum, Maxime Robira, Benoit Hilloulin, Materials, Vol. 13, number 2543, issue 11 (2020), doi:10.3390/ma13112543
| The autogenous self healing of cementitious material micro cracks might lead to the service life extension of structures. However, most of its aspects are still unknown. This paper investigates the self healing capacity of ternary cement blends including metakaolin (MK), ground granulated blast furnace slag (BFS), limestone (LS), and siliceous filler (F). Morphology and healing precipitation patte...
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| [93] | | Hygro-thermo-mechanical responses of balsa wood core sandwich composite beam exposed to fire, Luan Tran Van, Vincent Legrand, Pascal Casari, Revathy Sankaran, Pau Loke Show, Aydin Berenjian, Chyi How Lay, Processes, Vol. 8, number 103, issue 1 (2020), doi:10.3390/pr8010103
| In this study, the hygro thermo mechanical responses of balsa core sandwich structured composite was investigated by using experimental, analytical and numerical results. These investigations were performed on two types of specimen conditions: dry and moisture saturation sandwich composite specimens that are composed of E glass/polyester skins bonded to a balsa core. The wet specimens were immerse...
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| [94] | | Multifidelity adaptive kriging metamodel based on discretization error bounds, L. Mell, V. Rey, F. Schoefs, International Journal for Numerical Methods in Engineering, Vol. 121, issue 20, pp. 4566-4583 (2020), doi:10.1002/nme.6451
| This article presents an approach to build a multifidelity kriging metamodel from finite element computations on different meshes for stuctural reliability assessment. The proposed method takes advantage of the computation of bounds on the discretization error, which enables to guarantee the state (safe or failure) of each computation of the performance function. An algorithm to build the metamode...
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| [95] | | The Eshelby problem of the confocal N-layer spheroid with imperfect interfaces and the notion of equivalent particle in thermal conduction, J. F. Barthelemy, F. Bignonnet, International Journal of Engineering Science, Vol. 150, number 103274, issue 23 (2020), doi:10.1016/j.ijengsci.2020.103274
| The solution to the generalized conduction Eshelby problem of a confocal N layer spheroid with low or highly conducting interfaces between isotropic layers is provided thanks to a decomposition in series of harmonics. A generic workflow is detailed for practical numerical implementation including a fine analysis to assess the influence of the level of truncation of the infinite series. The case of...
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| [96] | | Stability properties of the Discontinuous Galerkin Material Point Method for hyperbolic problems in one and two space dimensions, Adrien Renaud, Thomas Heuze, Laurent Stainier, International Journal for Numerical Methods in Engineering, Vol. 121, issue 4, pp. 664-689 (2020), doi:10.1002/nme.6239
| In this paper, stability conditions are derived for the Discontinuous Galerkin Material Point Method (DGMPM) on the scalar linear advection equation for the sake of simplicity and without loss of generality for linear problems. The discrete systems resulting from the application of the DGMPM discretization in one and two space dimensions are first written. For these problems, a second order Runge ...
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| [97] | | Multi-partner benchmark experiment of fatigue crack growth measurements, Raphael Langlois, Raphael Cusset, Jerome Hosdez, Vincent Bonnand, Benoit Blaysat, Lea Menut-Tournadre, Jan Neggers, Michel Coret, Joseph Henry, Veronique Doquet, Michel Grediac, Vincent Chiaruttini, Martin Poncelet, Henry Proudhon, Nathalie Limodin, Julien Rethore, Engineering Fracture Mechanics, Vol. 235, number 107157, issue 11 (2020), doi:10.1016/j.engfracmech.2020.107157
| The design of reliable structures and the estimation of the residual fatigue life of industrial parts containing flaws or cracks rely on our ability to predict the propagation of fatigue cracks. Whereas in industrial component cracks might have a complex path due to geometry and loading, lab experiments used for identifying crack propagation law are often in pure mode I. The paper presents a synth...
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| [98] | | Numerical modeling of the hygro-mechanical behavior of the 3D composite materials, Mamadou Abdoul Mbacke, Shahram Khazaie, Sylvain Freour, Frederic Jacquemin, Journal of Composite Materials, Vol. 54, issue 28, pp. 4457-4471 (2020), doi:10.1177/0021998320932270
| The composite materials used in marine environments are subjected to mechanical loads along with the water absorption. The analysis of the behavior of such materials requires to take into account the coupling between the mechanical and diffusion behaviors. The hygro mechanical coupling has been widely investigated experimentally and numerically. This paper presents a numerical approach to model th...
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| [99] | | Analysis of the delayed damage model for three one-dimensional loading scenarii, Jihed Zghal, Nicolas Moe, Comptes Rendus Physique, Vol. 21, issue 6, pp. 527-537 (2020), doi:10.5802/CRPHYS.42
| The delayed damage model has been introduced by Allix andDeu [1] as away to overcome spurious mesh dependency in failure analysis involving damage and dynamic loading. The damage rate is bounded through a time scale which, combined with the wave speed, introduces implicitly a length scale. In this paper, the delayed damage model is analyzed through numerical experiments on three different loading ...
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| [100] | | Real time imaging of strain fields induced by the ferrite-to-austenite transformation in high purity iron, Nicolas Bruzy, Michel Coret, Bertrand Huneau, Laurent Stainier, Christophe Denoual, Marilyne Mondon, Guillaume Kermouche, Materials Today Communications, Vol. 24, number 101028 (2020), doi:10.1016/j.mtcomm.2020.101028
| During the ferrite to austenite transformation, the accommodation of the volume misfit between ferrite and austenite induces strain localization in both phases. A detailed understanding of this mechanism is a necessary step towards the improvement of thermomechanical treatments of iron alloys. Full field measurements of displacement during heating of high purity iron samples are thoroughly post pr...
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| [101] | | A simple characterization methodology for the identification of the visco-elastic behavior of thermoset adhesives during cure, Marion Girard, Mael Peron, Alexandre Uguen, Pascal Casari, Frederic Jacquemin, Applied Adhesion Science, Vol. 8, number 5481, issue 1 (2020), doi:10.1186/s40563-020-00125-4
| The identification of the mechanical behavior of adhesives is necessary to describe the development of residual stresses during their curing, which might impact their mechanical strength and lead to early failure of the bonding. A simple characterization and modeling approach is therefore developed and presented, which permits to monitor and identify the mechanical behavior of a thermosetting adhe...
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| [102] | | Improvement of the digital image correlation close to the borders of an object, M. Baconnais, J. Rethore, M. Francois, Strain, Vol. 56, number 739, issue 3 (2020), doi:10.1111/str.12340
| The measurement error of the finite element based Digital Image Correlation is reduced along the borders of an object by using the precise measurement, obtained by Virtual Image Correlation (VIC). The proposed method is called Virtual and Digital Image Correlation (VDIC). The boundary, identified by the VIC with a subpixel precision, is used firstly to create an adapted mesh and secondly to create...
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| [103] | | Laser polishing of additive laser manufacturing surfaces: Methodology for parameter setting determination, Benoit Rosa, Jean Yves Hascoet, Pascal Mognol, International Journal of Manufacturing Research, Vol. 15, number 181, issue 2 (2020), doi:10.1504/IJMR.2020.106853
| This paper focuses on the improvement of thin and complex surfaces obtained with a direct metal deposition (DMD) process through the use of the laser polishing process on the same five axis machine. This study aims at giving a methodology to determine laser polishing operating parameters and thus master the final topography improvement. On the basis of experiments and a polynomial regression metho...
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| [104] | | A variational framework for the modeling of glassy polymers under finite strains, Jan Michel C. Farias, Laurent Stainier, Eduardo Alberto Fancello, Continuum Mechanics and Thermodynamics, Vol. 32, issue 4, pp. 1037-1055 (2020), doi:10.1007/s00161-019-00809-8
| In this paper, a viscoelastic model able to capture important mechanical features of a wide class of glassy polymers is presented. Among them, the ability of reproducing the highly nonlinear rate dependent stress response and the post yield strain softening phenomenon. The simplicity of the proposition allows to recover the same mathematical structure of classical constitutive approaches, well sui...
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| [105] | | Assessment of uncertainty propagation using first-order Markov chain for maintenance of pavement degradation, Amjad Issa, Franck Schoefs, International Journal of Pavement Engineering, Vol. 21, issue 14, pp. 1841-1852 (2020), doi:10.1080/10298436.2019.1568430
| The first order Markov Chain (MC) is used to predict the degradation of three types of pavements (rigid, semi rigid, and mix) utilising database in the five departments in the West of France. The assessment of uncertainty in the MC evolution is presented through studying the trend of mean and standard deviation, for components of the transition probabilities (TP) using different time steps (2, 3, ...
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| [106] | | On loading paths followed inside plastic simple waves in two-dimensional elastic-plastic solids, Adrien Renaud, Thomas Heuze, Laurent Stainier, Journal of the Mechanics and Physics of Solids, Vol. 143, number 104064, issue 1 (2020), doi:10.1016/j.jmps.2020.104064
| Although the solution of hyperbolic partial differential equations in elastic plastic media is of major importance in solid mechanics, the mathematical complexity of such problems increases with the space dimensionality. As a result, the development of analytical solutions is in general not possible. Whereas the wave structure resulting from given external loads is known and well understood for on...
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| [107] | | Forced vibrations and wave propagation in multilayered solid spheres using a one-dimensional semi-analytical finite element method, Matthieu Gallezot, Fabien Treyssede, Odile Abraham, Wave Motion, Vol. 96, number 102555, issue 1 (2020), doi:10.1016/j.wavemoti.2020.102555
| A numerical model is proposed to compute the eigenmodes and the forced response of multilayered elastic spheres. The main idea is to describe analytically the problem along the angular coordinates with spherical harmonics and to discretize the radial direction with one dimensional finite elements. The proper test function must be carefully chosen so that both vector and tensor spherical harmonics ...
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| [108] | | A Cost-Benefit Methodology for Selecting Analytical Reinforced Concrete Corrosion Onset Models, N. Rakotovao Ravahatra, T. De Larrard, F. Duprat, E. Bastidas-Arteaga, F. Schoefs, Advances in Civil Engineering, Vol. 2020, issue 88, pp. 1-22 (2020), doi:10.1155/2020/3286721
| This work focuses on predicting corrosion onset induced by concrete carbonation or chloride ingress when using analytical predictive models. The paper proposes a procedure that helps building and infrastructure managers to select an appropriate model depending on the available information and the means granted to auscultation campaigns. The approach proposed combines the costs of input parameters,...
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| [109] | | How to efficiently apply soft thin coating to existing Finite Element contact model, T. Tiirats, N. Chevaugeon, N. Moes, C. Stolz, N. Marouf, E. Desdoit, Finite Elements in Analysis and Design, Vol. 177, number 103420, issue 1 (2020), doi:10.1016/j.finel.2020.103420
| In case of very thin surface coatings, the coating layer is often ignored in a large scale Finite Element Analysis. This is mainly due to extensive numerical cost required to capture the correct mechanical behaviour of the layer, especially if the coating is significantly softer than the substrate. To overcome the excessive computational cost, due to the full discretization of the thin layer, in l...
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| [110] | | On the definition of a relevant meso-scale for upscaling the mechanical behavior of 3D granular materials, Ngoc Son Nguyen, Helene Magoariec, Eric Vincens, Bernard Cambou, Granular Matter, Vol. 22, number 1525, issue 1 (2020), doi:10.1007/s10035-019-0972-9
| Abstract: In this paper, the difficulty to adapt the definition of a meso scale for 2D granular materials to derive the macroscopic mechanical behavior of 3D granular materials by upscaling is discussed. A starting point for a definition of a 3D meso scale may be found in previous works where the transport of small particles through a set of defined pores and constrictions has been investigated. I...
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| [111] | | Shear localization as a mesoscopic stress-relaxation mechanism in fused silica glass at high strain rates, W. Schill, J. P. Mendez, L. Stainier, M. Ortiz, Journal of the Mechanics and Physics of Solids, Vol. 140, number 103940, issue 5 (2020), doi:10.1016/j.jmps.2020.103940
| Molecular dynamics (MD) simulations of fused silica glass deforming in pressure shear, while revealing useful insights into processes unfolding at the atomic level, fail spectacularly in that they grossly overestimate the magnitude of the stresses relative to those observed, e. g., in plate impact experiments. We interpret this gap as evidence of relaxation mechanisms that operate at mesoscopic le...
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| [112] | | Instrumentation of Stratospheric Balloon Straps with Optical Fibre for Temperature and Strain Monitoring, Yann Lecieux, Cyril Lupi, Dominique Leduc, Quentin Mace, Valentin Jeanneau, Pascale Guigue, Sensors Basel Switzerland, Vol. 20, number 1433, issue 5 (2020), doi:10.3390/s20051433
| This article is devoted to the instrumentation, with optical fibres, of the straps holding the envelope of stratospheric balloons. This instrumentation is motivated in the first instance by the need to validate the numerical models used in the design of balloons. It must also be used to measure the temperature along the envelope in order to deduce the pressure field. It is shown at first that the ...
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| [113] | | Practice on creating a common reference concrete for Round Robin Testing programmes based on the experience from COST Action TU1404, Marijana Serdar, Stephanie Staquet, Dirk Schlicke, Emmanuel Roziere, Miguel Azenha, Sree Nanukuttan, Ivan Gabrijel, Ozlem Cizer, Violeta Bokan Bosiljkov, Aljosa Sajna, Construction and Building Materials, Vol. 247, number 118542 (2020), doi:10.1016/j.conbuildmat.2020.118542
| Round Robin Testing (RRT) is a well known method for assessing the reproducibility of a test or verification of a new test procedure of almost any kind. In the EU funded network COST Action TU1404 Towards the next generation of standards for service life of cement based materials and structures, an Extended Round Robin Testing program (RRT+) was planned as a fundamental tool to obtain i...
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| [114] | | An enriched finite volume formulation for the simulation of ductile material failure under shock loading, Marie Gorecki, Guillaume Peillex, Laurianne Pillon, Nicolas Moes, Computational Mechanics, Vol. 65, issue 5, pp. 1267-1288 (2020), doi:10.1007/s00466-020-01818-0
| A method is proposed to model failure under shock loading. Finite Volume schemes are known to be efficient to take into account the density variations in the shock regions. The proposed method, called eXtended Finite Volume (XFV), is able to model failure in a finite volume framework. The material degradation is modeled using a cohesive zone model to dissipate the amount of energy required to crea...
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| [115] | | Remapping-free variational h-adaption for strongly coupled thermo-mechanical problems, Rohit Pethe, Thomas Heuze, Laurent Stainier, Finite Elements in Analysis and Design, Vol. 176, number 103435, issue 1 (2020), doi:10.1016/j.finel.2020.103435
| A mesh adaption approach for strongly coupled problems is proposed, based on a variational principle. The adaption technique relies on optimality properties of an energy like potential and is hence free from error estimates and the associated computational cost. According to the saddle point nature of this variational principle, a staggered solution approach appears more natural and leads to separ...
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| [116] | | Stability of the stationary solutions of the AllenCahn equation with non-constant stiffness, Paolo Butta, Emilio N.M. Cirillo, Giulio Sciarra, Wave Motion, Vol. 98, number 102641 (2020), doi:10.1016/j.wavemoti.2020.102641
| We study the solutions of a generalized AllenCahn equation deduced from a Landau energy functional, endowed with a non constant higher order stiffness. We assume the stiffness to be a positive function of the field and we discuss the stability of the stationary solutions proving both linear and local non linear stability....
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| [117] | | On the use of Cox regression for statistical analysis of fatigue life results, K. Narynbek Ulu, B. Huneau, E. Verron, A. S. Beranger, P. Heuillet, Journal of Testing and Evaluation, Vol. 48, number 20180541, issue 2 (2020), doi:10.1520/JTE20180541
| The presence of scatter is inherent to fatigue life studies of materials and structures; a wide variety of statistical tools exists for analysis. Among them, Cox (proportional hazards) regression is widely encountered in survival studies of medical sciences, but has not found frequent use in fatigue of materials. Of interest is the ability to treat scatter in both applied load and fatigue life as ...
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| [118] | | Towards the prediction of sandwich composites durability in severe condition of temperature: A new numerical model describing the influence of material water content during a fire scenario, Juan Pablo Marquez Costa, Vincent Legrand, Sylvain Freour, Frederic Jacquemin, Materials, Vol. 13, number 5420, issue 23 (2020), doi:10.3390/ma13235420
| An advanced fire thermal model was developed to predict the evolution of the temperature and decomposition gradient across a sandwich composite structure when exposed to high temperatures (fire). This model allows the prediction of a large numbers of parameters, such as thermal expansion, gas mass storage, porosity, permeability, density, and internal pressure. The highlight of this model is that ...
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| [119] | | A generic method to realize long fibers filled and large polymer parts in additive manufacturing, Jean Yves Hascoet, Olivier Authelin, Matthieu Rauch, Journal of Machine Engineering (2020), doi:10.36897/jme/118217
| A general manufacturing methodology for long fibers filled and large polymer (LFFLP) parts will be proposed, which constitutes the major scientific contribution of the document. The input, output, control and analysis data at each step of the methodology will be specified. Experiments realized in the laboratory of Ecole Centrale de Nantes will demonstrate the relevance and effectiveness of this me...
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| [120] | | A first step towards the numerical simulation of the forming of flat TFP preforms, Jessy Simon, Nahiene Hamila, Christophe Binetruy, Sebastien Comas-Cardona, Procedia Manufacturing, Vol. 47, pp. 126-128 (2020), doi:10.1016/j.promfg.2020.04.151
| The mechanical efficiency of fiber reinforced composite materials mainly depends on the alignment of fibers along the load paths arising from the boundary conditions applied to the part. On this basis, the Tailored Fiber Placement (TFP) consists in building a fibrous reinforcement by continuously laying down a tow on a plane backing material which can be a polymer film or a fibrous reinforcement s...
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| [121] | | Influence of local cubic anisotropy on the transition towards an equipartition regime in a 3D texture-less random elastic medium, Shahram Khazaie, Regis Cottereau, Wave Motion, Vol. 96, number 102574, issue 1 (2020), doi:10.1016/j.wavemoti.2020.102574
| At long lapse times in randomly fluctuating media with macroscopic isotropy (texture less media), the energy of elastic waves is equipartitioned between compressional (P) and shear (S) waves. This property is independent of the local isotropy or anisotropy of the heterogeneous constitutive tensor and of the type of source. However the local symmetry of the constitutive tensor does influence the ra...
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| [122] | | Variational h-adaption for coupled thermomechanical problems, Rohit Pethe, Thomas Heuze, Laurent Stainier, Engineering Computations Swansea Wales, Vol. 37, issue 4, pp. 1261-1290 (2020), doi:10.1108/EC-05-2019-0243
| Purpose: The purpose of this paper is to present a variational mesh h adaption approach for strongly coupled thermomechanical problems. Design/methodology/approach: The mesh is adapted by local subdivision controlled by an energy criterion. Thermal and thermomechanical problems are of interest here. In particular, steady and transient purely thermal problems, transient strongly coupled thermoelast...
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| [123] | | Behavior of composite material instrumented by optical fiber, Rochdi El Abdi, Vichith Chean, H. Ramezani Dana, Pascal Casari, Frederic Jacquemin, International Journal of Mechatronics and Applied Mechanics, Vol. 1, issue 7 (2020), doi:10.17683/ijomam/issue7.10
| The efficiency of an optical sensor embedded in a composite structure strongly depends on the interfacial adhesion between the optical fiber coating and the surrounding solid material and on the environment humidity. Moisture diffusion can induce a decrease of the mechanical stiffness and strength of organic matrix composites. The present work reports on the study of the interfacial adhesion of an...
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| [124] | | Parametric inverse impulse response based on reduced order modeling and randomized excitations, Santiago Montagud, Jose Vicente Aguado, Francisco Chinesta, Pierre Joyot, Mechanical Systems and Signal Processing, Vol. 135, number 106392, issue 5 (2020), doi:10.1016/j.ymssp.2019.106392
| This paper is concerned with the computation of the inverse impulse response of a parametrized structural dynamics problem using reduced order modeling and randomized excitations. A two stages approach is proposed, involving the solution of both direct and inverse problems. In the first stage, the parametrized structural dynamics problem is formulated in the frequency domain, and solved using a re...
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| [125] | | Viscoelastic behaviour investigation and new developed laboratory slamming test on foam core sandwich, Fahmi Alila, Jamal Fajoui, Raphael Gerard, Pascal Casari, Mohamed Kchaou, Frederic Jacquemin, Journal of Sandwich Structures and Materials, Vol. 22, issue 6, pp. 2049-2074 (2020), doi:10.1177/1099636218792729
| In the first part of this paper, a viscoelastic model is used to numerically study the cellular foam core fatigue behaviour. Materials temperature evolution is quantified with a numerical/experimental confrontation. In the second part, the slamming phenomenon is discussed by measuring the panel flexural strain on a racing sailboat during navigation. Making use of these results, a new slamming test...
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| [126] | | Virtual, Digital and Hybrid Twins: A New Paradigm in Data-Based Engineering and Engineered Data, Francisco Chinesta, Elias Cueto, Emmanuelle Abisset-Chavanne, Jean Louis Duval, Fouad El Khaldi, Archives of Computational Methods in Engineering, Vol. 27, issue 1, pp. 105-134 (2020), doi:10.1007/s11831-018-9301-4
| Engineering is evolving in the same way than society is doing. Nowadays, data is acquiring a prominence never imagined. In the past, in the domain of materials, processes and structures, testing machines allowed extract data that served in turn to calibrate state of the art models. Some calibration procedures were even integrated within these testing machines. Thus, once the model had been calibra...
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| [127] | | Seismic precursor to instability induced by internal erosion in loose granular slopes, Wei Hu, Pierre Yves Hicher, Gianvito Scaringi, Qiang Xu, Theo W.J. Van Asch, Gonghui Wang, Wei Chao Li, Gang Deng, Xiang Qian Liang, Geotechnique, Vol. 70, issue 7, pp. 636-638 (2020), doi:10.1680/jgeot.18.D.002
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| [128] | | Using the unit influence line of a bridge to track changes in its condition, Barbara Heitner, Franck Schoefs, Eugene J. OBrien, Ales Znidaric, Thierry Yalamas, Journal of Civil Structural Health Monitoring, Vol. 10, issue 4, pp. 667-678 (2020), doi:10.1007/s13349-020-00410-7
| The unit influence line of a structure reflects its behaviour and changes in response to damage that may occur. An iterative algorithm is presented in this paper to obtain the shape of the instantaneous influence line of a bridge together with the relative axle loads of trucks passing overhead. One great advantage of this approach is that the need for sensor calibration with pre weighed trucks can...
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| [129] | | Efficient estimation of the failure probability of a monopile foundation using a Kriging-based approach with multi-point enrichment, Abdul Kader El Haj, Abdul Hamid Soubra, Computers and Geotechnics, Vol. 121, number 103451 (2020), doi:10.1016/j.compgeo.2020.103451
| In this paper, a probabilistic analysis of an offshore monopile foundation embedded in a spatially varying clayey soil was performed. An efficient Kriging based probabilistic approach using a multipoint enrichment was adopted for the analysis. The aim is to compute the failure probability Pf against exceeding a threshold value on the monopile head rotation. The soil undrained cohesion w...
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| [130] | | Magnitude of latent heat in thermally loaded clays, Sergio Samat, Laurent Brochard, Ioannis Stefanou, International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 44, issue 14, pp. 1926-1957 (2020), doi:10.1002/nag.3114
| Temperature changes are known to induce specific couplings in clay, in particular, an anomalously high thermal pressurization in undrained conditions or a thermal compaction in drained conditions, both of which are potential threats for the mechanical stability and sealing capacity of the geomaterials. Thermodynamical analysis of those peculiar thermomechanical couplings points to a potentially im...
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| [131] | | Biocompatibility and osseointegration of nanostructured titanium dental implants in minipigs, Alain Hoornaert, Luciano Vidal, Romain Besnier, Jean Francois Morlock, Guy Louarn, Pierre Layrolle, Clinical Oral Implants Research, Vol. 31, issue 6, pp. 526-535 (2020), doi:10.1111/clr.13589
| Objectives: It is well known that surface treatments of dental implants have a great impact on their rate of osseointegration. The aim of this study was to compare the biocompatibility and the boneimplant contact (BIC) of titanium dental implants with different surface treatments. Material and methods: Test implants (Biotech Dental) had a nanostructured surface and control implants (Anthogyr) were...
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| [132] | | Mechanical behaviour and permeability of geopolymer mortars, Mateusz Sitarz, Marta Choinska, Izabela Hager, Abdelhafid Khelidj, MATEC Web of Conferences, Vol. 322, number 01043, issue 4 (2020), doi:10.1051/matecconf/202032201043
| Geopolymers may be considered as an alternative materials to Portland cement ones, providing an opportunity to exploit industrial wastes or co products with promising short and long term performances in the construction field, f.ex. for reparation issues. However, these materials are porous and consequently their durability depends on the risk of intrusion of aggressive agents. In order to assess ...
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| [133] | | Electromagnetic Processing for Elaboration of Dissimilar Joints. Case Studies with Aluminum, Surendar Marya, Guillaume Racineux, Modern Concepts in Material Science, Vol. 3, issue 3 (2020), doi:10.33552/MCMS.2020.03.000564
| Magnetic pulse welding (MPW) has potential applications where fusion welding is problematic, such as in dissimilar joints or where the very part integrity, as in electronic components, is likely to be threatened by hot environments. The paper describes some critical applications such as: joining of similar joints between Al wire to Al plate for electric and hybrid applications, dissimilar joints o...
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| [134] | | Thermal effects on the mechanical behavior of Paris green clayconcrete interface, Kexin Yin, Roxana Vasilescu, Anne-Laure Fauchille, Panagiotis Kotronis, E3S Web of Conferences, Vol. 205, number 13006, issue 4 (2020), doi:10.1051/e3sconf/202020513006
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| [135] | | Effets dechelles spatiale et temporelle sur les caracterisations de la sensibilite des sols a la suffusion, Thao Le Van, Chucheng Zhong, Fateh Bendahmane, Didier Marot, Academic Journal of Civil Engineering (2020), doi:10.26168/ajce.35.1.25
| La suffusion est un processus derosion interne qui mobilise uniquement la fraction fine. Ce phenomene complexe apparait comme la combinaison de trois processus : detachement, transport et possible filtration de la fraction fine. Ce phenomene peut induire une modification de la distribution granulometrique, de la porosite et de la conductivite hydraulique du materiau. Avec lobjectif de caracteriser...
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| [136] | | Plant-based diets to manage the risks and complications of chronic kidney disease, J. J. Carrero, A. Gonzalez-Ortiz, C. M. Avesani, S. J. L. Bakker, V. Bellizzi, P. Chauveau, C. M. Clase, A. Cupisti, A. Espinosa-Cuevas, P. Molina, Kevin Moreau, G. B. Piccoli, A. Post, S. Sezer, D. Fouque, Nature Reviews Nephrology, Vol. 16, issue 9, pp. 525-542 (2020), doi:10.1038/s41581-020-0297-2
| Traditional dietary recommendations for patients with chronic kidney disease (CKD) focus on the quantity of nutrients consumed. Without appropriate dietary counselling, these restrictions can result in a low intake of fruits and vegetables and a lack of diversity in the diet. Plant nutrients and plant based diets could have beneficial effects in patients with CKD: increased fibre intake shifts the...
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| [137] | | Laser polishing of titanium surfaces obtained by additive manufacturing process, Benoit Rosa, Jean-Yves Hascoet, MATEC Web of Conferences, Vol. 321, number 03034, issue 8 (2020), doi:10.1051/matecconf/202032103034
| Additive Manufacturing (AM) surfaces are composed by different textures and high roughness values which tend to limit its functionalities. Laser polishing process is enabling to smooth surfaces by material melting, change surface texture and decrease surface roughness ( S a ). Based on a five axes machine, which consist of milling and Laser Metal Deposition (LMD) processes, the machine is addition...
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| [138] | | Effect of Modeling Techniques on the Simulation: Calculating the Stress Concentration Factors in Square Hollow Section T-Joints as a Case Study, Serwan Talabani, Ahmad Azeez, Silvio DE BARROS, Basim Fadhil, Hewa Omer, ARO-The Scientific Journal of Koya University, Vol. 8, number 88, issue 1 (2020), doi:10.14500/aro.10585
| The capability of the simulation software motivates the engineers to analyze the stress in complex welded joints where ordinary mathematical expression may lack. However, unfortunately, the simulations were interpreted mechanically without considering the simulation parameters deeply. For this reason, this research aims to study the effect of simulation parameters on the stress concentration facto...
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| [139] | | Time-dependent behaviour of the Callovo-Oxfordian claystone-concrete interface, Eleni Stavropoulou, Matthieu Briffaut, Frederic Dufour, Guillaume Camps, Journal of Rock Mechanics and Geotechnical Engineering, Vol. 12, issue 1, pp. 89-101 (2020), doi:10.1016/j.jrmge.2019.09.001
| In the context of the Cigeo project, the French National Radioactive Waste Management Agency (Andra) is studying the behaviour of a deep geological facility for radioactive waste deposit in the Callovo Oxfordian (COx) claystone. The assessment of durability of this project requires the prediction of irreversible strain over a large time scale. The mechanical interaction of the host rock and the co...
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| [140] | | Durability of self-compacting concretes made with the natural pozzolan and siliceous fines, Kada Ayed, Djamel Eddine Kerdal, Nordine Leklou, Journal of Materials and Engineering Structures (2020)
| The effect of natural pozzolan and local waste siliceous fines on the durability of SCC was studied in this paper. Three self compacting concretes were made with the following three additions, namely limestone fillers (SCC LF), pozzolanic fillers (SCC NP) and siliceous fillers (SCC SF). Durability tests, such as the porosity accessible to water, capillarity, carbonation, permeability to oxygen gas...
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| [141] | | Repairing Ti-6Al-4V aeronautical components with DED additive manufacturing, Matthieu Rauch, Jean-Yves Hascoet, Manjaiah Mallaiah, MATEC Web of Conferences, Vol. 321, number 03017, issue 5 (2020), doi:10.1051/matecconf/202032103017
| Direct Energy Deposition (DED) processes are Additive Manufacturing (AM) processes that provide new perspectives for the manufacturing industry. In particular the area of component repair could highly benefit from these processes. It is consequently necessary to ensure the ability of DED processes, so that the repaired component can provide the same level of service than a new one. This paper focu...
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| [142] | | Micromechanical modelling of damage induced by delayed ettringite formation in concrete, Alexandre Yammine, Francois Bignonnet, Nordine Leklou, Marta Choinska, MATEC Web of Conferences, Vol. 322, number 01037 (2020), doi:10.1051/matecconf/202032201037
| A multi scale poromechanical model of damage induced by Delayed Ettringite Formation (DEF) as a consequence of progression of micro cracks at the fine aggregate scale is developed. The aim is to link the DEF induced expansion at both the microscopic and macroscopic scales to the loss of stiffness of the mortar and the increase of its diffusion coefficient. At the microscopic scale, mortar is assum...
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| [143] | | Leffet de lecrouissage rotationnel sur le comportement des sols argileux, Sanae Ahayan, Zhenyu Yin, Panagiotis Kotronis, Frederic Collin, Academic Journal of Civil Engineering (2020), doi:10.26168/ajce.34.1.56
| Induced anisotropy is a constitutive feature of clays that can be introduced through a proper "Rotational hardening law" allowing the rotation of the yield and the potential plastic surfaces in the stress space.Two rotational hardening laws are studied in this paper. Validation is provided using the results of a drained triaxial test of a Finnish clay. Finite Elements simulations of a circular rig...
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| [144] | | Effects of heat treatment on the behavior of teak wood adherends bonded joints, S Budhe, M Banea, S Ghugal, Silvio DE BARROS, Applied Adhesion Science, Vol. 8, number 263, issue 1 (2020), doi:10.1186/s40563-020-00124-5
| Introduction Nowadays, scientific communities and industries are looking for alternative materials to the synthetic composites and metals, as these materials are non degradable, limited in quantity, hazardous to nature and costly [1, 2]. Hence many researchers are attracted towards natural materials (e.g. wood) for various applications, such as construction, furniture, decorative products, sports ...
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| [145] | | A comparative study on the effect of different activating solutions and formulations on the early stage geopolymerization process, Lais Alves, Nordine Leklou, Silvio DE BARROS, MATEC Web of Conferences, Vol. 322, number 01039 (2020), doi:10.1051/matecconf/202032201039
| Concrete is a major construction material that produces high levels of carbon dioxide in its manufacturing process. Hence the construction sector is responsible for relevant environmental impacts. This justifies the need to find materials as green and ecological alternatives to common Portland cement. Geopolymers represent the most promising alternative due to its proven durability, mechanical and...
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