Interaction of elastic waves by an interfacial Griffith crack

A study is made of the problem of finding the distribution of stress field in the vicinity of a Griffith crack located at the interface of two dissimi lar orthotropic half-planes. The crack is opened by the interaction of a pl ane harmonic elastic wave incident normally on the crack. The Fredholm inte gral equation is derived for the determination of diffraction wave field. T he problem is then reduced to a pair of simultaneous singular integral equa tions which are solved by using the Jacobi polynomials. An-expression for t he stress intensity factors is obtained in the end. (C) 1999 Elsevier Scien ce Ltd. All rights reserved.