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Attenuation and dispersion of antiplane shear waves due to scattering by many two-dimensional cavities
| Title: | Attenuation and dispersion of antiplane shear waves due to scattering by many two-dimensional cavities |
| Authors: | Kawahara, Jun Browse this author | | Ohno, Taichi Browse this author | | Yomogida, Kiyoshi Browse this author →KAKEN DB |
| Keywords: | cavitation | | elastic waves | | ultrasonic propagation |
| Issue Date: | Jun-2009 |
| Publisher: | Acoustical Society of America |
| Journal Title: | Journal of the Acoustical Society of America |
| Volume: | 125 |
| Issue: | 6 |
| Start Page: | 3589 |
| End Page: | 3596 |
| Publisher DOI: | 10.1121/1.3124779 |
| Abstract: | Propagation and scattering of antiplane shear waves within media with two-dimensional cavities are numerically simulated, and the attenuation and phase velocities are experimentally determined. The results are compared with the predictions by the Foldy theory and its three corrected versions. If the cavity concentrations are small such as 0.02, the differences among the theoretical predictions are insignificant, and every theory is consistent with the experimental results. For higher concentrations such as 0.1, the differences become significant, but there are no objective grounds to say that any of the corrected versions of the Foldy theory works better than the original. If the error tolerance is as high as 10%, the simple Foldy formula may remain useful for concentrations up to about 0.1. |
| Rights: | Copyright 2009 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in J. Acoust. Soc. Am., 125(6), pp. 3589-3596 and may be found at http://dx.doi.org/10.1121/1.3124779 |
| Type: | article |
| URI: | http://hdl.handle.net/2115/40200 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 蓬田 清
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