705 異種接合材料の自由縁応力特異性影響領域に存在する界面端近傍き裂の応力拡大係数(GS-3 強度・破壊(2))

抄録

Free edge stress singularities occur at the intersection of the interface and the free-surface when different materials are bonded. Therefore the fracture of the bonded dissimilar materials may occur near the intersection of the interface and the free-surface. The stress intensity factor of a crack near the interface is affected by the free edge stress singularities. In this study, we investigated stress intensity factor of crack near the interface of bonded dissimilar materials with changing the distance between interface and a crack by using the boundary element method. It is found that the stress intensity factor of a crack near the interface in bonded dissimilar materials can be evaluated by using parameters of singular stress field of the bonded dissimilar materials with no crack.