Modeling first matrix cracking stress of fiber-reinforced ceramic-matrix composites considering fiber fracture

摘要

Highlights?The first matrix cracking stress of fiber-reinforced ceramic-matrix composites (CMCs) has been investigated considering fiber fracture.?The relationships between the first matrix cracking stress, interface debonding and fiber fracture have been established.?The effects of fiber volume fraction, interface and fiber properties on the first matrix cracking stress and fiber broken fraction have been analyzed.?The experimental first matrix cracking stress of three different CMCs with different fiber volume fraction have been predicted.AbstractIn this paper, the first matrix cracking stress (FMCS) of fiber-reinforced ceramic-matrix composites (CMCs) has been investigated using the energy balance approach considering fiber fracture. The shear-lag model combined with fiber failure model and interface debonding criteria has been adopted to analyze the stress distributions in CMCs. The relationships between the F