TY - JOUR
T1 - 3D Detection and Quantitative Characterization of Cracks in a Ceramic Matrix Composite Tube Using X-Ray Computed Tomography
AU - Chen, Y.
AU - Gélébart, L.
AU - Chateau, C.
AU - Bornert, M.
AU - King, A.
AU - Aimedieu, P.
AU - Sauder, C.
N1 - Funding Information:
This work was supported by the CNRS program “Défi NEEDS Matériaux”. The loading machine used during the in situ XRCT test was designed and manufactured by LMS (Ecole polytechnique) and Laboratoire Navier.
Publisher Copyright:
© 2020, Society for Experimental Mechanics.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - 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.
AB - 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.
KW - Ceramic matrix composites (CMCs)
KW - Crack quantification
KW - Damage mechanisms
KW - X-ray computed tomography
UR - http://www.scopus.com/inward/record.url?scp=85077686881&partnerID=8YFLogxK
U2 - 10.1007/s11340-019-00557-5
DO - 10.1007/s11340-019-00557-5
M3 - Article
AN - SCOPUS:85077686881
VL - 60
SP - 409
EP - 424
JO - Experimental Mechanics
JF - Experimental Mechanics
SN - 0014-4851
IS - 3
ER -