TY - JOUR
T1 - Stress field and damage evolution in C/SiC woven composites
T2 - Image-based finite element analysis and in situ X-ray computed tomography tests
AU - Ai, Shigang
AU - Song, Weili
AU - Chen, Yanfei
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/4
Y1 - 2021/4
N2 - The construction and examination of meso-structural finite element models of a Chemical-Vapor-Infiltrated (CVI) C/SiC composite is carried out based on X-ray microtomography digital images (IB-FEM). The accurate meso-structural features of the C/SiC composites, which are consisted of carbon fiber tows and CVI-SiC matrix, in particular the cavity defects, are reconstructed. With the IB-FEM, the damage evolution and fracture behaviors of the C/SiC composite are investigated. At the same time, an in situ tensile test is applied to the C/SiC composite under a CT real-time quantitative imaging system, aiming to investigate the damage and failure features of the material as well as to verify the IB-FEM. The IB-FEM results indicate that material damage initially occur at the defects, followed by propagating toward the fiber-tow/SiC-matrix interfaces, ultimately, combined into macro-cracks, which is in good agreement with the in situ CT experiment results.
AB - The construction and examination of meso-structural finite element models of a Chemical-Vapor-Infiltrated (CVI) C/SiC composite is carried out based on X-ray microtomography digital images (IB-FEM). The accurate meso-structural features of the C/SiC composites, which are consisted of carbon fiber tows and CVI-SiC matrix, in particular the cavity defects, are reconstructed. With the IB-FEM, the damage evolution and fracture behaviors of the C/SiC composite are investigated. At the same time, an in situ tensile test is applied to the C/SiC composite under a CT real-time quantitative imaging system, aiming to investigate the damage and failure features of the material as well as to verify the IB-FEM. The IB-FEM results indicate that material damage initially occur at the defects, followed by propagating toward the fiber-tow/SiC-matrix interfaces, ultimately, combined into macro-cracks, which is in good agreement with the in situ CT experiment results.
KW - C/SiC composite
KW - CT real-time quantitative imaging
KW - Image-based finite element method
KW - In situ nanomechanical test
KW - X-ray microtomography
UR - http://www.scopus.com/inward/record.url?scp=85099510410&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2020.12.026
DO - 10.1016/j.jeurceramsoc.2020.12.026
M3 - Article
AN - SCOPUS:85099510410
SN - 0955-2219
VL - 41
SP - 2323
EP - 2334
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 4
ER -