4 research outputs found

    Accounting the differential swelling in multiphysics moisture diffusion models

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    International audienceThe purpose of this paper is to take into account the deri vative by moisture content of polymer volume in order to establish a diffusion law within the so-called “thermodynamical approach” for a polymer material which experiences a hygro-mechanical load. In this study, the specific case corresponding to the existence of unsymmetrical hygroscopic boundary conditions was inv estigated

    Durabilité des matériaux composites sous sollicitations hygrothermomécaniques

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    International audienceThe scope of the paper is to present the key points to be addressed in a durability study in the case composite materials in hygrothermomechanical environments. The experimental aging tests allowing the identificat ion of the diffusive behavior are presented. The induced effects on the mechanical behavior and the hygrothermomechanical coupling phenomenon are also examined.L’objectif de cet article est de présenter les points-clés d’une étude de durabilité pour des matériaux composites soumis à un environnement hygrothermomécanique. La démarche permettant de réaliser des essais de vieillissement afin d’identifier le comportement diffusif est présentée. Les effets induits sur le comportement mécanique et les phénomènes de couplages hygrothermomécaniques sont ensuite examinés
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