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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.
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https://hal-enpc.archives-ouvertes.fr/hal-02557516
Contributeur : Camille Chateau <>
Soumis le : mardi 28 avril 2020 - 18:08:46
Dernière modification le : vendredi 9 octobre 2020 - 10:02:39

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Y. Chen, Lionel Gélébart, Camille Chateau, Michel Bornert, A. King, et al.. 3D detection and quantitative characterization of cracks in a ceramic matrix composite tube using X-ray computed tomography. Experimental Mechanics, Society for Experimental Mechanics, 2020, 60 (3), pp.409-424. ⟨10.1007/s11340-019-00557-5⟩. ⟨hal-02557516⟩

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