Title :
A method of search for leaky waves based on exceptional wave theory
Author_Institution :
Steel & Alloys Inst., Moscow, Russia
Abstract :
A method of search for leaky waves in crystals is based on the calculation of permitted orientations for exceptional bulk waves, which satisfy the stress-free boundary conditions for surface waves. This method is applied to quartz. The problem of existence is discussed for quasi-shear and quasi-longitudinal exceptional waves in three cut families of trigonal crystals: (0°,θ,0°), (90°,90°,ψ) and (0°,θ,90°)
Keywords :
piezoelectric materials; quartz; surface acoustic wave devices; surface acoustic waves; ultrasonic velocity; exceptional wave theory; leaky waves; piezoelectric crystal; quartz; quasi-longitudinal exceptional waves; quasi-shear exceptional waves; stress-free boundary conditions; trigonal crystals; Attenuation; Boundary conditions; Crystallography; Crystals; Iron alloys; Piezoelectric polarization; Steel; Surface acoustic wave devices; Surface acoustic waves; Surface waves;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495581
