Abstract
In this paper the line spring model originally developed to treat the surface crack problems in homogeneous plates is extended to laminates which may consist of bonded isotropic or orthotropic dissimilar elastic layers. By using the two fundamental solutions for a laminate with a through crack and the corresponding plane strain problem for an edge crack, the surface crack problem in laminates is reduced to a system of singular integral equations. Sample results showing the stress intensity factors are given for bonded orthotropic and isotropic layers which correspond to fiber-reinforced structural composites and ceramic-coated metal substrates, respectively.
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