CONTRIBUTION A LA CARACTERISATION ET A LA MODELISATION ELECTROMAGNETIQUE ET THERMIQUE DES MATERIAUX COMPOSITES ANISOTROPES

摘要

Composite materials cover a lot of manufacturing industries. In each step of their life cycle the transformation of the material needs some source of heat. If the reinforcement is carbon fibre, the heat source can be induction heating. The aim of this thesis is to model in 3D, the induction heating of these materials which are multiscale, heterogeneous and anisotropic. These materials are replaced by homogeneous equivalent materials using homogenisation or experimental methods. In this work, to identify the electric conductivity an experimental method based on the impedance measurement is used. The composite materials are usually in the form of plates with very small thickness compared to the other dimensions. Two models have been developed, a monolayer anisotropic shell elements and a multi-layer model dedicated to the laminated composites with oriented structures. The comparison between the simulation and experimental results gives a good concordance. These models are applied to develop an industrial application.