2007/07/31 by Andrew N. Norris
Engineering · Physics and Astronomy · #Composite Material Mechanics #Thermoelastic and Magnetoelastic Phenomena #Ultrasonics and Acoustic Wave Propagation #cond-mat.mtrl-sci
paper · pdf · doi:10.1121/1.2836755
published as Journal of the Acoustical Society of America, 123, 3, 1399-1408 (2008) · 11 pages, 2 figures
arxiv created 2007/11/04 · openalex publication_date 2008/03/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Several general results are derived for diffuse waves in anisotropic solids, including concise expressions for the modal density per unit volume d(omega), and for the participation factor matrix G. The latter is a second-order tensor which describes the orientational distribution of diffuse wave or reverberant energy, and reduces to the identity I under isotropy. Calculations of G for a variety of example materials show significant deviation from I even under moderate levels of anisotropy.