The evaluation of reliability for zirconium diboride composite with additives of graphite

Abstract Statistical distribution of strength was investigated with different load speeds for ultra high temperature ceramic. It shows that the strengths under different load speeds follow Weibull probability well. Inertial stress was obtained for the ceramic under different load speeds. Finally, an application was implemented for the ceramic suffering quenching test. Dynamic thermal stress was obtained during quenching test, which was much higher than quasi-static one. The effect of heat transfer coefficients on failure probability range was evaluated for the ceramic during quenching test.