Author(s)

S. Corradi, J.M. Kenny, M. Marchetti & D. Vahedi

Abstract

Applications of the optical method of reflective caustics to measurements of the stress-intensity factors and J integrals in polycarbonate flat specimens are investigated. Elastic and variable stiffness elastoplastic dual boundary element methods have been applied to compute respectively elastic stress intensity factors and elastoplastic J integrals. The necessary experimental and numerical requirements to help determine accurate values for K and J are described. The analysis of the interaction of a main crack with a collinear microcrack placed near the tip of the main crack at different distances, has been the configuration adopted. 1 Introduction Contour integrals, namely Rice's inte

Keywords