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Attenuation and dispersion of antiplane shear waves due to scattering by many two-dimensional cavities

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タイトル: Attenuation and dispersion of antiplane shear waves due to scattering by many two-dimensional cavities
著者: Kawahara, Jun 著作を一覧する
Ohno, Taichi 著作を一覧する
Yomogida, Kiyoshi 著作を一覧する
キーワード: cavitation
elastic waves
ultrasonic propagation
発行日: 2009年 6月
出版者: Acoustical Society of America
誌名: Journal of the Acoustical Society of America
巻: 125
号: 6
開始ページ: 3589
終了ページ: 3596
出版社 DOI: 10.1121/1.3124779
抄録: 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
Relation (URI): http://link.aip.org/link/?JAS/125/3589
資料タイプ: article
URI: http://hdl.handle.net/2115/40200
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 蓬田 清

 

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