Title :
Inversion of dual mode surface waves to determine elastic constants of anisotropic solid
Author :
Ihara, Ikuo ; Koguchi, Hideo ; Uchida, Naoki ; Aizawa, Tatsuhiko ; Kihara, Junji
Author_Institution :
Nagaoka Univ. of Technol., Niigata, Japan
Abstract :
Inversion of dual mode surface waves to determine elastic constants of anisotropic material is presented. In the present inversion, two types of surface acoustic wave velocities, the leaky Rayleigh and pseudo leaky Rayleigh modes, have been utilized as primary information. Elastic constants are determined from the directional dependences of both velocities using an optimization procedure. Based on the investigations of the convergence of the solution in inverse problem defined on a cubic crystal, it has been shown that the use of dual mode leaky surface waves considerably improves the stability of the solutions
Keywords :
Rayleigh waves; elastic constants; inverse problems; surface acoustic waves; ultrasonic velocity; anisotropic solid; cubic crystal; dual mode leaky surface waves; dual mode surface waves; elastic constants; inverse problem; leaky Rayleigh waves; optimization procedure; pseudo leaky Rayleigh modes; surface acoustic wave velocities; Acoustic waves; Anisotropic magnetoresistance; Azimuthal angle; Gallium arsenide; Inductors; Inverse problems; Microscopy; Solids; Surface acoustic waves; Surface waves;
Conference_Titel :
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-4153-8
DOI :
10.1109/ULTSYM.1997.663080