Analysis of the elastic wave excitation in solid plates by phase velocity scanning of a laser beam
- 4 November 1991
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (19) , 2384-2385
- https://doi.org/10.1063/1.106023
Abstract
A theory is presented for the propagation of elastic waves in a plate excited by scanning a laser beam at a constant velocity. A formula for the excitation by scanning a line-focused laser beam is deduced from a general formula and analyzed extensively in a two-dimensional model. It is derived that such modes of Lamb waves are selectively excited whose phase velocities match the scanning velocity. It is also shown that major characteristics of experimental observations previously made are explained with the present model.Keywords
This publication has 1 reference indexed in Scilit:
- Selective excitation of single-mode acoustic waves by phase velocity scanning of a laser beamApplied Physics Letters, 1991