研究速報 : Fracture Behavior of a Completely Brittle Crack in Consideration of Restraining Stress between Atomic Planes

Tbe so-called ideal cleavage strength of a solid is usually estimated by considering the restraining stress between atomic planesl). Similarly the behavior of a completely brittle crack may, in principle, be subject to the atomic restraining stress in crack plane. We can suggest that a crack grows when the atomic restraining stress at crack-tip becomes 1-rreversible with theincrease of an external force. But this idea