抄録
The elastic stress analysis of a three-dimensional crack is carried out by the use of the indirect boundary integral method. The fundamental solutions of this method are simple- and double-layer potentials. This method has the advantages that discontinuity of a layer potential on the crack surface is related to that of displacement, i. e. crack opening displacement. As a result, the stress intensity factors and the crack opening displacement of penny and ring shaped cracks are obtained and the usefulness of this method in crack problems is shown by comparison with other results.
