The influence of failure criteria on strength prediction of ceramic components

The effect of failure criteria on the computation of short-time strength distributions of ceramic components, based on the evaluation of test results obtained from typical experimental setups, is investigated. Three different sensitivity indicators are defined to quantify the influence of (a) multiaxial failure criteria, (b) the cracks’ behaviour under compressive loading, and (c) inexact measurement of the Weibull modulus of the strength distribution. Numerical values for different states of stress as well as for typical experimental setups are given and preliminary statements are derived.