Acoustic metamaterial panels for sound attenuation in the 50-1000 Hz regime

Z. Yang; H. M. Dai; N. H. Chan; G. C. Ma; Ping Sheng

doi:10.1063/1.3299007

Acoustic metamaterial panels for sound attenuation in the 50-1000 Hz regime

Z. Yang^*, H. M. Dai, N. H. Chan, G. C. Ma, Ping Sheng

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

539 Citations (Scopus)

Abstract

We show experimentally that thin membrane-type acoustic metamaterials can serve as a total reflection nodal surface at certain frequencies. The small decay length of the evanescent waves at these frequencies implies that several membrane panels can be stacked to achieve broad-frequency effectiveness. We report the realization of acoustic metamaterial panels with thickness ≤15 mm and weight ≤3 kg/m² demonstrating 19.5 dB of internal sound transmission loss (STL) at around 200 Hz, and stacked panels with thickness ≤60 mm and weight ≤15 kg/m² demonstrating an average STL of >40 dB over a broad range from 50 to 1000 Hz.

Original language	English
Article number	041906
Number of pages	3
Journal	Applied Physics Letters
Volume	96
Issue number	4
DOIs	https://doi.org/10.1063/1.3299007
Publication status	Published - 25 Jan 2010

Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3299007

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title = "Acoustic metamaterial panels for sound attenuation in the 50-1000 Hz regime",

abstract = "We show experimentally that thin membrane-type acoustic metamaterials can serve as a total reflection nodal surface at certain frequencies. The small decay length of the evanescent waves at these frequencies implies that several membrane panels can be stacked to achieve broad-frequency effectiveness. We report the realization of acoustic metamaterial panels with thickness ≤15 mm and weight ≤3 kg/m2 demonstrating 19.5 dB of internal sound transmission loss (STL) at around 200 Hz, and stacked panels with thickness ≤60 mm and weight ≤15 kg/m2 demonstrating an average STL of >40 dB over a broad range from 50 to 1000 Hz.",

author = "Z. Yang and Dai, {H. M.} and Chan, {N. H.} and Ma, {G. C.} and Ping Sheng",

note = "Funding Information: Financial support for this work by HKUST 604207 from the Research Grant Council of the Hong Kong SAR Government is gratefully acknowledged. Publisher copyright: {\textcopyright} 2010 American Institute of Physics",

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T1 - Acoustic metamaterial panels for sound attenuation in the 50-1000 Hz regime

AU - Yang, Z.

AU - Dai, H. M.

AU - Chan, N. H.

AU - Ma, G. C.

AU - Sheng, Ping

N1 - Funding Information: Financial support for this work by HKUST 604207 from the Research Grant Council of the Hong Kong SAR Government is gratefully acknowledged. Publisher copyright: © 2010 American Institute of Physics

PY - 2010/1/25

Y1 - 2010/1/25

N2 - We show experimentally that thin membrane-type acoustic metamaterials can serve as a total reflection nodal surface at certain frequencies. The small decay length of the evanescent waves at these frequencies implies that several membrane panels can be stacked to achieve broad-frequency effectiveness. We report the realization of acoustic metamaterial panels with thickness ≤15 mm and weight ≤3 kg/m2 demonstrating 19.5 dB of internal sound transmission loss (STL) at around 200 Hz, and stacked panels with thickness ≤60 mm and weight ≤15 kg/m2 demonstrating an average STL of >40 dB over a broad range from 50 to 1000 Hz.

AB - We show experimentally that thin membrane-type acoustic metamaterials can serve as a total reflection nodal surface at certain frequencies. The small decay length of the evanescent waves at these frequencies implies that several membrane panels can be stacked to achieve broad-frequency effectiveness. We report the realization of acoustic metamaterial panels with thickness ≤15 mm and weight ≤3 kg/m2 demonstrating 19.5 dB of internal sound transmission loss (STL) at around 200 Hz, and stacked panels with thickness ≤60 mm and weight ≤15 kg/m2 demonstrating an average STL of >40 dB over a broad range from 50 to 1000 Hz.

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DO - 10.1063/1.3299007

M3 - Journal article

AN - SCOPUS:75749151973

SN - 0003-6951

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

M1 - 041906

ER -

Acoustic metamaterial panels for sound attenuation in the 50-1000 Hz regime

Abstract

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