Accession Number : ADA113682

Title :   Linear and Nonlinear Ultrasonic Interactions on Liquid-Solid Boundaries.

Descriptive Note : Summary rept. Sep 78-Mar 82,

Corporate Author : GEORGETOWN UNIV WASHINGTON DC DEPT OF PHYSICS

Personal Author(s) : Mayer,Walter G

PDF Url : ADA113682

Report Date : Apr 1982

Pagination or Media Count : 7

Abstract : A summary report listing tasks performed and complete reference listing of all publications originating from Contract during reporting period. The main emphasis was placed on reflection and transmission of a bounded ultrasonic beam since it had been found that plane wave theory (as almost always used in the past) does not explain the existence of nonspecular ultrasonic reflection from interfaces, where 'nonspecular reflection' refers to beam displacements, beam split-up, intensity distribution changes within the reflected beam, and other similar phenomena. Such nonspecular reflections occur for simple liquid-solid interfaces when the incident beam impinges at the Rayleigh angle and, for solid plates immersed in a liquid, at Lamb mode angles.

Descriptors :   *Ultrasonics, *Rayleigh waves, Acoustooptics, Boundaries, Bibliographies, Interfaces, Reflection

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE