Abstract
AbstractIn this chapter, multiple matrix cracking evolution in fiber-reinforced ceramic-matrix composites (CMCs) at elevated temperature is investigated using the critical matrix strain energy (CMSE) criterion. The shear-lag model combined with the interface oxidation model and interface debonding criterion is adopted to analyze the fiber and matrix axial stress distribution inside of the damaged composite. Relationships between multiple matrix cracking, interface debonding, and oxidation are established. Effects of fiber volume fraction, interface shear stress, interface debonding energy, oxidation temperature, and duration on the stress-dependent multiple matrix cracking evolution are discussed. Comparisons of multiple matrix cracking evolution with/without oxidation are analyzed. Experimental multiple matrix cracking evolution in unidirectional C/SiC, SiC/CAS, SiC/Borosilicate and mini-SiC/SiC composites with/without oxidation are predicted.KeywordsCeramic-matrix composites (CMCs)Multiple matrix crackingTensileInterface debondingInterface oxidation
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