KRYLOV, V.V. and PONOMAREV, E.P., 1985. Acoustic emission accompanying the onset of surface microcracks. Soviet Physics - Acoustics, 31(2), pp. 122-125
The acoustic emission accompanying the formation and growtb of shallow cracks (microcracks) on the surface
of an isotropic solid is investigated. The radiation directivity patterns of two- and threedimensional
microcracks are calcuiated for various conditions of tbeir propagation'