Modeling out-of-phase thermomechanical fatigue hysteresis of long fiber-reinforced ceramic-matrix composites subjected to different loading sequence

Abstract

In this paper, the out-of-phase (OP) thermomechanical fatigue (TMF) hysteresis of fiber-reinforced ceramic-matrix composites subjected to different loading sequences has been investigated. The relationships between the OP TMF hysteresis, fiber/matrix interface debonding/sliding and multiple loading sequence have been established. The OP TMF hysteresis loops and interface damage for different loading sequences, cycle numbers and thermal cyclic temperature ranges have been analyzed. Comparisons of OP TMF hysteresis between single and multiple loading sequences have been conducted. The stress–strain hysteresis loops and fiber/matrix interface debonding/sliding of cross-ply SiC/MAS composites subjected to single and multiple loading sequences have been predicted.