Accession Number : ADA113914

Title :   T-Matrix Formulation to Study the Frequency Dependent Properties of Absorbing Materials.

Descriptive Note : Final rept. 1 Aug 80-31 Oct 81,


Personal Author(s) : Varadan,Vijay K ; Varadan,Vasundara V

PDF Url : ADA113914

Report Date : 15 Jan 1982

Pagination or Media Count : 76

Abstract : A scattering matrix theory is presented for studying the multiple scattering of both longitudinal and transverse elastic waves in a medium containing a random distribution of inclusions or voids of arbitrary shape. A statistical analysis with QCA and Percus-Yevick pair correlation function is then employed to obtain expressions for the average amplitudes of the coherent fields which may be solved to yield the bulk or effective properties of the inhomogeneous medium. Suggestions for incorporating CPA in conjunction with QCA so that materials with dense concentration of inclusions can be considered are also given. (Author)

Descriptors :   *Matrices(Mathematics), *Elastic waves, *Absorbers(Materials), *Acoustic properties, *Statistical analysis, Scattering, Elastomers, Distribution, Bonding, Physical properties, Ultrasonic radiation, Wave propagation, Inelastic scattering, Layers, Transverse waves, Numerical analysis, Matrix theory, Theory, Reflection, Thickness

Subject Categories : Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE