抄録
The association of the J-integral estimations which are applied to metal and the indirect method by means of a cohesive force model analysis based on the same J-integral concept was experimentally investigated. As a result, the reasonable agreement was obtained concerning a relation of J-integral value and deflection among the experimental method by Beglay-Landes, the semi-analytical method using the Rices formula and the present method basad on an analysis of damage of the fracture process zone.
