Accession Number : AD0744240

Title :   Preliminary Equation System Describing the Effect of Stacking Faults on Ultrasonic Reflectivity.

Descriptive Note : Technical rept.,

Corporate Author : NAVAL WEAPONS LAB DAHLGREN VA

Personal Author(s) : Springer,C. E.

Report Date : APR 1972

Pagination or Media Count : 38

Abstract : A system of equations which describes the conic pattern reradiated from a crystalline surface can aid in analysis of the fault structure of a crystalline material. A preliminary study of such a system has been made. A bounded, ultrasonic beam reflected from a liquid-solid interface will show a reflectivity in disagreement with theoretically predicted reflectivities. Some possible mechanisms which would explain this discrepancy are discussed and a theoretical model for the system is outlined. ( (Author)

Descriptors :   (*DISLOCATIONS, EQUATIONS OF MOTION), SURFACE PROPERTIES, TEST METHODS, ULTRASONIC RADIATION, REFLECTIVITY, RAYLEIGH WAVES, COPPER, BRASS

Subject Categories : Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE