Accession Number : AD0745859

Title :   Acoustic Energy Flow in High Symmetry Crystals.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Fauth,Herbert Carl

Report Date : JUN 1972

Pagination or Media Count : 39

Abstract : The determination of elastic properties of crystals by sound velocity measurements is facilitated by use of a perturbation solution to the equations of motion for sound waves propagating in the crystals. Transformation equations can relate the solution for arbitrary propagation direction to an established crystal coordinate system. A method of calculating the acoustic components of the energy flow vector is developed for several high symmetry crystal classes. The validity of this method is herein confirmed and results are presented which are consistent with experimental data. A modern desk calculator was employed to determine solutions for hexagonal, cubic and tetragonal crystals. (Author)

Descriptors :   (*ELASTIC PROPERTIES, CRYSTALS), MECHANICAL WAVES, EQUATIONS OF MOTION, METAL CRYSTALS, ZINC, MAGNESIUM, ALUMINUM, TIN, ACOUSTIC PROPERTIES, THESES

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE