ID | 60652 |
フルテキストURL | |
著者 |
Watanabe, Keita
Okayama University
Fujita, Mikiya
Okayama University
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抄録 | Acoustic metasurfaces have been attracting much attention due to their effectiveness in controlling sound wave propagation despite a structure well below the wavelength at operating frequency. We propose a novel decorated membrane resonator structure with multiple circular membranes leading to multiplexing the resonant modes through breaking symmetry of the membrane's vibrational modes. By numerical analysis, the structure is optimized for wideband (500 to 1500 Hz) sound absorption. The designed structure is fabricated by using a 3D printer and its sound absorption property is verified experimentally by an impedance tube measurement. The results demonstrate that the present approach is simple but effective to broadband sound absorption with thin and lightweight artificial acoustic structures.
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備考 | This fulltext is available in Apr. 2021.
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発行日 | 2020-04-06
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出版物タイトル |
Japanese Journal of Applied Physics
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巻 | 59巻
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号 | SK号
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出版者 | Japan Society of Applied Physics
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開始ページ | SKKA06
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ISSN | 0021-4922
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NCID | AA12295836
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © 2020 The Japan Society of Applied Physics
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論文のバージョン | author
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DOI | |
Web of Science KeyUT | |
オフィシャル URL | https://iopscience.iop.org/article/10.35848/1347-4065/ab7e3e
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ライセンス | https://creativecommons.org/licenses/by-nc-nd/3.0/
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助成機関名 |
日本学術振興会
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助成番号 | 17K19035
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