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RESEARCH PAPERS

Transient Wave Propagation Methods for Determining the Viscoelastic Properties of Solids

[+] Author and Article Information
R. H. Blanc

Centre National de la Recherche Scientifique, Laboratoire de Mécanique et d’Acoustique, F-13402 Marseille, France

J. Appl. Mech 60(3), 763-768 (Sep 01, 1993) (6 pages) doi:10.1115/1.2900870 History: Received February 05, 1991; Revised December 09, 1991; Online March 31, 2008

Abstract

The following two solutions are proposed for deducing the viscoelastic properties of a solid from the change in the shape of a one-dimensional transient mechanical wave as it propagates through the medium: (i) The general solution:—the phase velocity and the attenuation coefficient are expressed in terms of the Fourier transforms of the pulse after two distances of travel, and (ii) A filter method. An experimental set-up is described. The results, which are obtained with no heating of the material, come within the audiofrequency range. This method fills a gap between the existing vibratory and ultrasonic methods.

Copyright © 1993 by The American Society of Mechanical Engineers
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