Published Paper Details:

The essential work of fracture concept is very popular to characterize the plane stress toughness of ductile material. The essential work characterizing the resistance of a structure to ductile fracture is important for many applications, from structural design to impact protection. The EWF approach is a means of separating the energy associated with fracture into two parts. One essential work of fracture (We) in its inner fracture process zone, and the plastic work (Wp) consumed by various deformation mechanisms in the outer plastic zone. In the present work test geometry, namely the double-edge notched tension (DEN-T) specimens, are used to evaluate the essential work of fracture for crack propagation. Also using the normalizing method proposed by Cotterell etal. (2005) to determine the traction separation law for plane stress condition of DEN-T specimens of Polycarbonate. The main objective of the work is to apply the well-developed concept of EWF to derive the cohesive stress-critical opening relationship. This relationship is generally known as cohesive law.