Wave attenuations in solids with perfectly aligned cracks

Authors

Liyong Yang, University of Nebraska - LincolnFollow
Joseph A. Turner, University of Nebraska - LincolnFollow

Date of this Version

February 2005

Comments

Published in L. Yang and J. A. Turner: Acoustics Research Letters Online. © 2005 Acoustical Society of America. Used by permission.

Abstract

The theory of wave propagation and scattering in cracked media is applied to study the wave attenuations in an isotropic solid medium containing perfectly aligned penny-shaped microcracks. The unit normals of all cracks are assumed parallel to a given direction. The wave scattering model is formulated using an anisotropic Green’s dyadic approach. Explicit expressions are derived for attenuations of the three wave modes in terms of the microcrack density. Numerical results are presented and discussed. In particular, comparisons of the attenuation results presented in this letter with previous results for the Rayleigh limit are given.