Analysis of high-intensity focused ultrasound source using time reversal: effect of lamb-like waves
書誌事項
- タイトル別名
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- Analysis of high intensity focused ultrasound source using time reversal effect of lamb like waves
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抄録
<jats:p> The pressure distribution of a focused ultrasound source was reconstructed from a measured pressure field on the focal plane using time-reversal. The two-dimensional Fourier transform of the distribution in the time and space domain showed a peak with a finite phase velocity, which corresponds to a mode of waves propagating from the circumference to the center of the transducer similar to Lamb waves. It was numerically confirmed that the propagating waves significantly enhanced the secondary lobe on the near side of the main focal lobe. The near side lobe was markedly reduced by increasing the thickness of the transducer by three times in the experiment. This significant change is consistent with the hypothesis that the near side lobe was formed by Lamb-like waves. </jats:p>
収録刊行物
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- Japanese journal of applied physics : JJAP
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Japanese journal of applied physics : JJAP 50 (4), 047301-, 2011-04
Tokyo : The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1520009408010837248
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- NII論文ID
- 40018800903
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- NII書誌ID
- AA12295836
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- ISSN
- 00214922
- 13474065
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- NDL書誌ID
- 11075980
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- 本文言語コード
- en
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- NDL 雑誌分類
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- ZM35(科学技術--物理学)
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- データソース種別
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- NDL
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