Accession Number : AD0859390

Title :   Propagation of Surface Waves at the Boundary Between a Piezoelectric Crystal and a Fluid Medium,

Corporate Author : HUGHES AIRCRAFT CO FULLERTON CA GROUND SYSTEMS GROUP

Personal Author(s) : Jones, William R. ; Campbell, James J. ; Veilleux, Sonja L.

Report Date : 20 AUG 1969

Pagination or Media Count : 35

Abstract : The propagation of surface waves at the boundary between a piezoelectric crystal and an ideal fluid is investigated. The effect of the fluid on the character of the waves is studied and it is found that propagating waves take the form of leaky waves transfering energy to the fluid medium. The numerical solution for the complex leaky wave velocity is obtained by two methods. The one is a straightforward solution of the complex characteristic equation for the velocity while the other is a perturbation scheme which treats the leaky wave as a first order perturbation on the nonleaky wave associated with surface wave propagation when the mechanical properties of the fluid are neglected. Comparison of the two methods reveals that the perturbation procedure is very accurate over a broad range of fluid parameters. (Author)

Descriptors :   (*PIEZOELECTRIC CRYSTALS, INTERFACES), (*ULTRASONIC RADIATION, WAVE PROPAGATION), COMPUTER PROGRAMMING, PERTURBATION THEORY, NUMERICAL ANALYSIS, FLUIDS.

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE