Characterization of temperature dependence of fracture behavior of monolithic and laminated ultra‐high temperature ceramic matrix composites

The fracture behavior of ultra‐high temperature ceramic matrix composites at high temperature has received increasing attention. However, few studies consider the effect of particle/crack interaction on the high temperature fracture strength of materials. In this work, the effect of particle/crack i...

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Bibliographic Details
Published in:Fatigue & fracture of engineering materials & structures 2023-03, Vol.46 (3), p.895-908
Main Authors: Wan, Yu, Wang, Ruzhuan, Jia, Bi, Zhou, Shan, Liu, Yumeng, Cai, Hongwei, Gu, Mingyu, Li, Dingyu, Li, Weiguo
Format: Article
Language:English
Subjects:
Ceramic matrix composites
Ceramics
Fracture strength
Grain size
High temperature
Mechanical properties
monolithic and laminated ultra‐high temperature ceramic matrix composites
particle/crack interaction
Particulate composites
Temperature dependence
temperature‐dependent model
Thermal stress
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Summary:The fracture behavior of ultra‐high temperature ceramic matrix composites at high temperature has received increasing attention. However, few studies consider the effect of particle/crack interaction on the high temperature fracture strength of materials. In this work, the effect of particle/crack interaction is introduced into temperature‐dependent fracture strength model of monolithic ultra‐high temperature ceramic matrix composites, which also considers effects of flaw size, grain size, and residual thermal stress. Furthermore, by considering the influence of laminated structure, a theoretical model of the temperature‐dependent fracture strength of laminated ceramic matrix composites is developed. The effect of particle/crack interaction is also included in this model. It should be noted that the predictions of models agree well with the experimental data of both monolithic and laminated materials without using any fitting parameters. The effect of particle/crack interaction is found to have a significant weakening effect on the strength of materials at different temperatures. Highlights High temperature strength of monolithic and laminated ceramic composites is characterized. Effects of temperature and particle/crack interaction are included in theoretical models. Effects of micro‐laminated structures on high temperature fracture strength are analyzed. Predictions of models agree well with measured data without using any fitting parameters.
ISSN:8756-758X
1460-2695
DOI:10.1111/ffe.13905