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ID 60652
著者
Watanabe, Keita Okayama University
Fujita, Mikiya Okayama University
Tsuruta, Kenji Okayama University ORCID Kaken ID publons researchmap
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.
備考
This fulltext is available in Apr. 2021.
発行日
2020-04-06
出版物タイトル
Japanese Journal of Applied Physics
59巻
SK号
出版者
Japan Society of Applied Physics
開始ページ
SKKA06
ISSN
0021-4922
NCID
AA12295836
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
© 2020 The Japan Society of Applied Physics
論文のバージョン
author
DOI
Web of Science KeyUT
オフィシャル URL
https://iopscience.iop.org/article/10.35848/1347-4065/ab7e3e
ライセンス
https://creativecommons.org/licenses/by-nc-nd/3.0/
助成機関名
日本学術振興会
助成番号
17K19035