Green Functions for Cylindrical Elastic Waves in Aluminum: Comparison Between Theory and Experiments

[+] Author and Article Information
A. Mourad

Laboratoire de Mecanique Physique, URA CNRS 867, Université de Bordeaux I, 33405 Talence, France

B. Castagnède

Laboratoire d’Acoustique, URA CNRS 1101, Université du Maine, 72017 Le Mans, France

E. Mottay

B. M. Industries, 7, rue du bois Chaland Lisses, 91029 Evry, France

J. Appl. Mech 61(1), 219-221 (Mar 01, 1994) (3 pages) doi:10.1115/1.2901409 History: Received April 21, 1992; Revised September 14, 1992; Online March 31, 2008


A comparison between experimental and theoretical displacement fields for the tangential force problem (which is a model of the thermoelastic regime for laser generated ultrasound) at an aluminum interface is reported. The numerical predictions are based on a standard formulation of the transient generation of elastic waves along a line source. In the configuration of a purely elastic thin plate, the cylindrical elastic waves are then detected on the other side by a point-like receiver. The experimental works is carried out with a pulsed Nd:YAG laser for the generation and a laser interferometric probe for the detection of ultrasonic waves.

Copyright © 1994 by The American Society of Mechanical Engineers
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