Shear waves from an external acoustic wave generator acting on a crack in a rectangular strip

An analytical solution for the wave equation in a rectangular elastic strip and in the presence of an external harmonic wave generator acting on a crack is derived. This source is spatially distributed in a generalized mathematical form near the vicinity of the tip of the crack and acts normal to its faces. Two limiting cases (1) a uniform distribution and (2) Dirac's delta function distribution are solved. Examples of the relation between the …