Author(s)

H. Nisitani, S. Tanaka, T. Teranishi & Y. Tanaka

Abstract

In most cases, the failure or fracture of machines and structures are brought by the stress concentration due to the existence of a crack or a notch. On the other hand, it is well known that the elastic maximum stress is not enough to predict the failure or fracture. Concerning a crack, linear fracture mechanics can play an important role to predict the fracture or yield in the neighborhood of a crack tip. However, concerning a notch, the concept corresponding to the linear fracture mechanics is not discussed fully until now. Originally, linear fracture mechanics should be called as linear crack mechanics. If we call linear fracture mechanics as linear crack mechanics, we will notice easil

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