Comportement thermoélastique global des composites à renforts enrobés : modélisation micromécanique et applications

Abstract : In many cases, a thin layer of some other elastic phase between an inclusion and the matrix is observed. This interphase may represent a coating of an inclusion in the composite materials, or is created during manufacturing by chemical reaction between the inclusion and the matrix. The presence of this thin layer modifies deeply the load transfers between the matrix and reinforcing fibers. Therefore it has an influence on local fields as well as on the effective properties of composites. The aim of this work is to study the case of coated ellipsoidal inclusions and anisotropic materials. It is based both on integral equation and interfacial operators. We also extend the studies to more general case when the topology of a coated inclusion can be described by two nonhomothetic concentric ellispoidal inclusions. Compared with experimental data and numerical results, the present approach provides reasonably accurate predictions for the effective moduli of composites with thinly coated inclusions
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Mohammed Cherkaoui. Comportement thermoélastique global des composites à renforts enrobés : modélisation micromécanique et applications. Autre. Université Paul Verlaine - Metz, 1995. Français. ⟨NNT : 1995METZ012S⟩. ⟨tel-01776905⟩

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