単一引張パルス波を受けるき裂部材の混合モード破壊条件について

抄録

In this paper, the dynamic fracture phenomenon of a mixed mode is analyzed by using the dynamic photoelastic technique. The specimen is an obliquely cracked plate made of epoxy resin. A tensile pulse wave, whose height and width are controlled, is generated by an impact apparatus and travels through a plate. The dynamic fracture stresses and crack propagating angles for several cases are measured. These results are compared with the values calculated by the static fracture criterion of the mixed mode, that is Erdogan-Sih's criterion, and the adaptability of the criterion to dynamic fracture is discussed.