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:

1972-04-01

Pagination or Media Count:

38.0

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