Abstract
In this chapter, the first matrix cracking stress (FMCS) of fiber-reinforced ceramic-matrix composites (CMCs) is investigated using the energy balance approach considering oxidation at elevated temperature. The shear-lag model cooperated with the interface oxidation model and interface debonding criteria is adopted to analyze the micro-stress field in the damaged composite. Relationships between FMCS, interface debonding and slip, testing temperature and duration are established. Effects of fiber volume fraction, interface properties, and testing temperature on the evolution of FMCS versus duration are analyzed. The FMCS of C/SiC with strong and weak interface bonding after unstressed oxidation at 700 °C in air are predicted for different oxidation duration.
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Li, L. (2022). First Matrix Cracking Behavior in Ceramic-Matrix Composites at Elevated Temperature. In: Matrix Cracking in Ceramic-Matrix Composites. Advanced Ceramics and Composites, vol 3. Springer, Singapore. https://doi.org/10.1007/978-981-19-0232-1_3
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DOI: https://doi.org/10.1007/978-981-19-0232-1_3
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