Insight into crack propagation induced by fiber orientations during single grain scratching of SiCf/SiC composites using FEM

Yichuan Ran,Renke Kang, Jiansong Sun,Zhigang Dong,Hao Wang,Yan Bao

Composites Part A: Applied Science and Manufacturing（2024）

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摘要

•A 3D microscale scratching simulation model considering SiCf/SiC anisotropy was established.•It was revealed that the discontinuous stress transfer at the interface is the main reason for the change in crack propagation path.•It was found that the propagation direction of radial cracks and subsurface cracks is determined by fiber orientation.

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关键词

Ceramic-matrix composites,Stress transfer,Microstructural analysis,Scratching

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