Title :
BAW wavefront propagation simulations
Author :
Bjorknas, K. ; Fagerholm, Juha ; Salo, J. ; Salomaa, Martti M.
Author_Institution :
Dept. of Eng. Phys. & Math., Helsinki Univ. of Technol., Finland
Abstract :
Bulk acoustic wave (BAW) propagation is simulated by numerically solving an equation of motion with the FFT method. The effect of a point source disturbance is simulated for various anisotropic media; the result has been presented as a movie. A comparison of the numerical computations with the experimental imaging data shows excellent agreement. The elasticity of the materials is visualized by constructing their slowness and group-velocity surfaces. The motivation for this work is provided by recent acoustic wavefront imaging experiments by Wolfe and collaborators
Keywords :
acoustic wave propagation; elasticity; fast Fourier transforms; FFT method; Fast Fourier Transform method; anisotropic media; bulk acoustic wave propagation; elasticity; equation of motion; group-velocity surfaces; point source disturbance; slowness; wavefront propagation simulations; Acoustic imaging; Acoustic propagation; Acoustic waves; Anisotropic magnetoresistance; Computational modeling; Data visualization; Elasticity; Equations; Motion pictures; Numerical simulation;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.764984
