a comparison between Japanese and French A16 defect assessment procedures for fatigue crack growth

摘要

This paper presents the results of a benchmark on fatigue crack growth evaluation for plates subjected to cyclic bending loads. The simplified fatigue crack growth evaluation methods of JNC in Japan and A16 procedures proposed by CEA in France are presented. The methods, based on the reference stress approach, are compared with each other. They are found to differ in estimating crack closure, in the expression used for the reference stress solution and in the formulations used to take plasticity into account.