Heat source estimation in anisotropic materials

The present paper is devoted to the determination of heat source dissipation from infrared thermographic measurements. Such procedure is mainly based on the heat diffusion equation provided by thermodynamics principles. Especially, this requires time and spatial derivation of temperature fields and...

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Bibliographic Details
Published in:Composite structures 2016-02, Vol.136, p.287-296
Main Authors: Valès, B., Munoz, V., Welemane, H., Pastor, M.-L., Trajin, B., Perrin, M., Cantarel, A., Karama, M.
Format: Article
Language:English
Subjects:
Anisotropic conduction
Anisotropy
Engineering Sciences
Filtering
Heat source
Heat sources
Heat transfer
Mathematical analysis
Mechanics
Mechanics of materials
Tensile tests
Tensors
Thermal analysis
Thermal conductivity
Thermomechanics
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Summary:The present paper is devoted to the determination of heat source dissipation from infrared thermographic measurements. Such procedure is mainly based on the heat diffusion equation provided by thermodynamics principles. Especially, this requires time and spatial derivation of temperature fields and the knowledge of the material thermal conductivity. This work intends to extend such classical procedure for isotropic materials to the anisotropic context. At first, we propose a comparative study of several filtering methods required for the data processing of noisy and discrete thermal acquisitions. In a second part, a transversely isotropic effective thermal conductivity tensor is estimated by means of a homogenization-based method. From these both results, a heat source application is presented in order to analyze damage phenomena in transversely isotropic CFRP submitted to tensile tests.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2015.09.050