Abstract
In this chapter, the stress rupture behavior of fiber-reinforced ceramic-matrix composites at intermediate temperatures is investigated using a micromechanical approach. The time-dependent microstress field of the damaged composite is analyzed when the matrix cracking, interface debonding and fiber failure occur. The time-dependent matrix crack spacing, fiber/matrix interface debonding length and fiber failure probability are determined using damage models. Relationships between stress level, strain response, interface debonding and oxidation, and fiber failure probability are established. Effects of material properties, damage state, stress level, and working temperature on the stress rupture lifetime, interface debonding and oxidation, and fiber failure probability of SiC/SiC composite are analyzed. Experimental stress rupture behavior of SiC/SiC composite under different peak stresses is evaluated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
