An acoustic mode method for the description of scattering and mode conversion processes

Author

Briers, R. ; Leroy, O.

Volume

2

fYear

1994

fDate

Oct. 31 1994-Nov. 3 1994

Firstpage

897

Abstract

We outline the fundamentals of an acoustic mode method, suitable to describe scattering and mode conversion phenomena arising in configurations with abrupt or gradual transitions in several spatial directions. The method is applied to three specific problems. First, the validity of a liquid-wedge for the generation of a Stoneley wave (also called Scholte-Stoneley wave) at a liquid-solid interface is discussed. Secondly, the scattering and mode conversion of a Stoneley wave at the extremity of a fluid loaded plate is analysed. Finally, the excitation of a Stoneley wave by means of the conversion of a bulk wave incident at the edge of a fluid loaded plate is considered

Keywords

acoustic field; eigenvalues and eigenfunctions; surface acoustic waves; ultrasonic materials testing; ultrasonic scattering; NDT; Scholte-Stoneley wave; Stoneley wave; abrupt transitions; acoustic mode method; acoustic wave scattering; bulk wave conversion; fluid loaded plate; gradual transitions; liquid-solid interface; liquid-wedge; mode conversion processes; rough boundary; spatial directions; Acoustic scattering; Acoustic testing; Eigenvalues/eigenfunctions; Loaded scatterers; Nondestructive testing; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE

Conference_Location

Cannes, France

Print_ISBN

0-7803-2012-3

Type

conf

DOI

10.1109/ULTSYM.1994.401689

Filename

401689