Stress intensity factor of an edge interface crack in a bonded finite plate under arbitrary material combination subjected to bending

Abstract

Although a lot of interface crack problems were previously treated, few solutions are available under arbitrary material combinations. This paper deals with an edge interface crack in a bonded finite plate under bending. Then, the effects of material combination on the stress intensity factors are discussed. To obtain the interface stress intensity factor very accurately, a useful method is presented on the basis of the stress values at the crack tip calculated by the finite element method. The stress intensity factors are indicated in charts and compared with the ones under tension. The maximum and minimum values of the stress intensity factors are also discussed under arbitrary material combinations. © 2012 The Japan Society of Mechanical Engineers.