Analysis of crack growth rate based on rotation at the crack tip plastic zone

Abstract

The crack growth rate of a line crack is obtained from a linear elastic analysis of work required in the formation of a crack tip plastic zone. Equations of crack growth rate are derived from rigid body rotation at the root of Dugdale's plastic zone. The proposed relations are used to study the fracture behaviour of materials in tension tests and the three point bending tests. © 1997 Kluwer Academic Publishers.