Analysis of the Failure of Ceramics Due to Subcritical Crack Growth

International audienceFailure conditions are assessed when ceramics exhibit Subcritical Crack Growth from preexisting flaws. In the framework of the weakest link theory and independent events hypothesis, a reliability analysis is carried out by modeling flaw distributions and crack growth laws. Experimental data obtained on a spinel Mn Zn ferrite subjected to five different load rates are analyzed by using an expression for the failure probability accounting for Subcritical Crack Growth