Analysis of a multiaxial test on a C/C composite by using digital image correlation and a damage model |
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Authors: | Jean-Noël Périé Sylvain Calloch Christophe Cluzel François Hild |
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Institution: | (1) LMT-Cachan, ENS de Cachan/CNRS-UMR 8535, Université Paris 6, Cedex, France |
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Abstract: | The “planar” digital image correlation technique needs a single CCD camera to acquire the surface patterns of a zone of a
specimen in the underformed and deformed states. With these two images, one can determine in-plane displacement and strain
fields. The digital image correlation technique used herein is based on Fast Fourier Transforms, which are very effective
in reducing the computation cost. Its performance is assessed and discussed on artificial signals and in a real experimental
situation. The technique is utilized to analyze experimental results of a plane shear experiment and validate a damage meso-model
describing different degradations in a C/C composite material. |
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Keywords: | Damage mechanics full-held measurement technique shear test experiment/simulation coupling |
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