Accession Number:

ADA222230

Title:

High-Frequency Reflection and Scattering of Sound by Ellipsoidally Embossed Surfaces

Descriptive Note:

Corporate Author:

ILLINOIS UNIV AT CHICAGO CIRCLE DEPT OF MATHEMATICS

Personal Author(s):

Report Date:

1988-06-01

Pagination or Media Count:

7.0

Abstract:

Earlier results for coherent reflection and incoherent scattering by embossed rigid or free surfaces are applied to ellipsoidal bosses with axes large compared to wavelength. The asymptotic procedures used originally for circular cylinders and spheres, and, subsequently, for elliptic cylinders are generalized to triaxial ellipsoids, and results for the corresponding bosses are obtained by the image method. Illustrative curves for both isotropic and anisotropic surfaces exhibit the influences of boss shape and orientation on the coherent reflection coefficients and incoherent differential scattering cross sections per unit area with emphasis on forward-specular and backscattered effects. jhd

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE