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3D detection and quantitative characterization of cracks in a ceramic matrix composite tube using X-ray computed tomography
Abstract : Cracks play an essential role in the degradation of the thermomechanical behavior of ceramic matrix composites. However, characterizing their complex 3D geometries within a complex microstructure is still a challenge. This paper presents a series of procedures, based on X-ray tomographic images, to evaluate the applied 3D strains, including their through-thickness gradients, and to detect and quantify the induced crack networks in ceramic matrix composites. Digital volume correlation and some dedicated image processing algorithms are employed. A novel method is proposed to estimate the opening, orientation and surface area of the detected cracks. The proposed procedures are applied to the images of a SiC/SiC composite tube that has been tested in situ under uniaxial tension with synchrotron X-ray computed tomography.
Littérature citée [29 références]
https://hal-enpc.archives-ouvertes.fr/hal-02557516
Contributeur : Camille Chateau Connectez-vous pour contacter le contributeur
Soumis le : mardi 28 avril 2020 - 18:08:46
Dernière modification le : lundi 9 août 2021 - 17:16:01
Contributeur : Camille Chateau Connectez-vous pour contacter le contributeur
Soumis le : mardi 28 avril 2020 - 18:08:46
Dernière modification le : lundi 9 août 2021 - 17:16:01
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postprint_chen20_expmech.pdf
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