A stochastic damage accumulation model for creep crack propagation

Previously a stochastic model for damage accumulation was proposed to obtain an expression for the fatigue crack propagation rate. In this paper, the model is used in order to derive the creep crack propagation law. The theoretical results show a good agreement with the experimental data. This suggests an extensive applicability of the present model. On these theoretical bases, it is concluded that the creep crack propagation rate is proportional to the process region size.