1987 年 36 巻 401 号 p. 173-176
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 modified and the J-integral is introduced in order to derive the propagation law of creep cracks. On these theoretical bases, it is shown that the creep crack propagation rate is nearly proportional to the creep J-integral. Our theoretical results are compared with the experimental data.