Full 3D damage characterisation of SiC/SiC composite tubes by X-ray tomography

Yang Chen (1, 2) , Lionel Gelebart (1) , Camille Chateau (2) , Michel Bornert (2) , Andrew D. King (3) , Cédric Sauder (1) , Patrick Aimedieu (2)

1 SRMA - Service des Recherches Métallurgiques Appliquées
2 navier umr 8205 - Laboratoire Navier
3 SSOLEIL - Synchrotron SOLEIL

Matrix cracking in SiC/SiC composite tubes is characterised from in situ tensile tests performed under x-ray synchrotron tomography. Digital volume correlation is used to estimate semi-local strains and to detect and extract cracks from the 3D images. Two populations of cracks can be distinguished. Their spatial distribution within the tube thickness is studied and their evolution is quantitatively analysed, such as subvoxel opening.

Mots clés: cracking; in situ; x-ray tomography; digital volume correlation

Domaines: Matériaux; Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]; Mécanique des structures [physics.class-ph]

Yang Chen, Lionel Gelebart, Camille Chateau, Michel Bornert, Andrew D. King, et al.. Full 3D damage characterisation of SiC/SiC composite tubes by X-ray tomography. 3rd International Conference on Tomography of Materials and Structures, Jun 2017, Lund, Sweden. ⟨hal-01593058⟩