Title :
Acoustic field analysis in lossy nonhomogeneous medium by the beam propagation method
Author :
Oh, J.T. ; Park, S.B.
Author_Institution :
Syst. Dev. Center, Korea Telecom, Seoul, South Korea
Abstract :
The beam profile of the acoustic wave produced by a disk transducer in lossy nonhomogeneous medium is calculated by the beam propagation method (BPM), which can be applied, in contrast to the conventional method, to a medium with arbitrary refractive index and attenuation coefficient distributions. The computed results agree quite well with the experimental data in the situations where the ray acoustics fails.<>
Keywords :
acoustic field; acoustic transducers; acoustic wave absorption; acoustic wave propagation; acoustic wave refraction; acoustic field analysis; arbitrary refractive index; attenuation coefficient distributions; beam profile; beam propagation method; disk transducer; lossy nonhomogeneous medium; Acoustic beams; Acoustic propagation; Acoustic transducers; Acoustic waves; Distributed computing; Lenses; Optical attenuators; Optical propagation; Propagation losses; Refractive index;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
