Accession Number : AD0749411

Title :   Scattering of Acoustic Waves by a Spherical Inclusion in a Solid.

Descriptive Note : Research rept.,

Corporate Author : GRUMMAN AEROSPACE CORP BETHPAGE N Y RESEARCH DEPT

Personal Author(s) : Fang,Tsun C.

Report Date : SEP 1972

Pagination or Media Count : 63

Abstract : An analysis is presented of surface deformation and scattered energy due to scattering of a high frequency plane longitudinal wave by a spherical inclusion in an isotrophically elastic solid medium. The inclusion is taken to be an isotropically elastic sphere of different material or a spherical cavity. The average rate of total scattered energy has been derived in terms of the expansion coefficients of the scattering waves. Exact and approximate, for both Rayleigh scattering and finite small inclusion, expressions for the expansion coefficients have been obtained. (Author)

Descriptors :   (*ULTRASONIC RADIATION, SCATTERING), (*NONDESTRUCTIVE TESTING, ULTRASONIC RADIATION), DEFECTS(MATERIALS), ACOUSTIC DETECTORS, SENSITIVITY, MECHANICAL WAVES, ELASTIC SCATTERING, MATHEMATICAL MODELS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE