Micromechanical Modeling of Failure in Fiber Reinforced Intermetallic Matrix Composites

Various failure modes observed in fiber reinforced intermetallic matrix composites are analyzed by using a micromechanical analytical model based on the con sistent shear lag theory. Stress distribution is examined for a number of damage configura tions such as interface split, fiber bridging and secondary cracking. Based on the point stress failure criterion, prediction of failure mode is made for a fiber reinforced unidirec tional composite with central transverse crack and subjected to a remote uniform stress.