A finite fracture model for the analysis of multi-cracking in woven ceramic matrix composites

Abstract : A finite fracture approach based on the Coupled Criterion is used to analyze multi-cracking in a woven ceramic matrix composite. In-situ micrographic observations obtained during tensile and bending tests performed on chemical vapor infiltrated SiC/SiC samples are utilized to identify cracking mechanisms. A two dimensional finite element model is generated to approximate the actual specimen section geometry including matrix, fiber tows and porosity. Numerical simulations are carried out with a dedicated algorithm to simulate nucleation and propagation of cracks. Comparing the simulation results with experimental ones shows that the model captures the main cracking features.
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Composites Part B: Engineering, Elsevier, 2018, 139, pp.75-83. 〈10.1016/j.compositesb.2017.11.050〉
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J. Li, E. Martin, D. Leguillon, C. Dupin. A finite fracture model for the analysis of multi-cracking in woven ceramic matrix composites. Composites Part B: Engineering, Elsevier, 2018, 139, pp.75-83. 〈10.1016/j.compositesb.2017.11.050〉. 〈hal-01668625〉

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