The brittle fracture criterion based on the maximum tensile stress on the surface of blunt crack tip

摘要

The brittle fracture criterion is developed for a blunted crack. The curvature radius of the blunt crack tip is suggested. as a characteristic length for brittle materials, and then the fracture toughness of the brittle materials can be determined from the cohesion strength and the characteristic length of the materials. (c) 2007 Elsevier Ltd. All rights reserved.