Thermoelastic surface waves generated by irradiation with a line-focused laser pulse

A numerical analysis formulation has been developed to simulate the generation of thermoelastic surface waves in a homogeneous isotropic elastic half-space under a line-focused laser irradiation. Analytic solutions for surface displacements are obtained by applying integral transform methods to the transient elastodynamic equations. The inverse Fourier transform is numerically evaluated by making use of Filon's method, and a numerical inversion of the Laplace transform is performed on the basis of the Crump-Durbin technique. We present the numerical results for the displacements and the tractions generated by a line-focused laser pulse irradiating the surface of an aluminium block.