Experimental investigation of composite metamaterial for underwater sound absorption

Nansha Gao; Hu Yu; Jing Liu; Jie Deng; Qiaogao Huang; Dongyang Chen; Guang Pan

doi:10.1016/j.apacoust.2023.109466

Experimental investigation of composite metamaterial for underwater sound absorption

Nansha Gao^*, Hu Yu, Jing Liu, Jie Deng, Qiaogao Huang, Dongyang Chen, Guang Pan

^*Corresponding author for this work

Research output: Indexed journal article › Article › peer-review

20 Citations (Scopus)

Abstract

We propose an underwater metamaterial combining aluminum foam and polyurea. Three samples with different aluminum foam scatterers were prepared and tested for sound absorption coefficient in the water-filled impedance and anechoic tank. The results show that the large and small conical scatterers significantly improve the sound absorption of the polyurea. This improvement in sound absorption comes from the change in the sound propagation path and waveform transformation. The design of the proposed underwater metamaterial and relevant experimental results presented in this paper have potential guiding values in developing underwater sound-absorbing functional materials.

Original language	English
Article number	109466
Journal	Applied Acoustics
Volume	211
DOIs	https://doi.org/10.1016/j.apacoust.2023.109466
Publication status	Published - Aug 2023
Externally published	Yes

Keywords

Aluminum foam
Composite metamaterial
Polyurea
Underwater sound absorption

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10.1016/j.apacoust.2023.109466

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title = "Experimental investigation of composite metamaterial for underwater sound absorption",

abstract = "We propose an underwater metamaterial combining aluminum foam and polyurea. Three samples with different aluminum foam scatterers were prepared and tested for sound absorption coefficient in the water-filled impedance and anechoic tank. The results show that the large and small conical scatterers significantly improve the sound absorption of the polyurea. This improvement in sound absorption comes from the change in the sound propagation path and waveform transformation. The design of the proposed underwater metamaterial and relevant experimental results presented in this paper have potential guiding values in developing underwater sound-absorbing functional materials.",

keywords = "Aluminum foam, Composite metamaterial, Polyurea, Underwater sound absorption",

author = "Nansha Gao and Hu Yu and Jing Liu and Jie Deng and Qiaogao Huang and Dongyang Chen and Guang Pan",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

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doi = "10.1016/j.apacoust.2023.109466",

language = "English",

volume = "211",

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T1 - Experimental investigation of composite metamaterial for underwater sound absorption

AU - Gao, Nansha

AU - Yu, Hu

AU - Liu, Jing

AU - Deng, Jie

AU - Huang, Qiaogao

AU - Chen, Dongyang

AU - Pan, Guang

PY - 2023/8

Y1 - 2023/8

N2 - We propose an underwater metamaterial combining aluminum foam and polyurea. Three samples with different aluminum foam scatterers were prepared and tested for sound absorption coefficient in the water-filled impedance and anechoic tank. The results show that the large and small conical scatterers significantly improve the sound absorption of the polyurea. This improvement in sound absorption comes from the change in the sound propagation path and waveform transformation. The design of the proposed underwater metamaterial and relevant experimental results presented in this paper have potential guiding values in developing underwater sound-absorbing functional materials.

AB - We propose an underwater metamaterial combining aluminum foam and polyurea. Three samples with different aluminum foam scatterers were prepared and tested for sound absorption coefficient in the water-filled impedance and anechoic tank. The results show that the large and small conical scatterers significantly improve the sound absorption of the polyurea. This improvement in sound absorption comes from the change in the sound propagation path and waveform transformation. The design of the proposed underwater metamaterial and relevant experimental results presented in this paper have potential guiding values in developing underwater sound-absorbing functional materials.

KW - Aluminum foam

KW - Composite metamaterial

KW - Polyurea

KW - Underwater sound absorption

UR - http://www.scopus.com/inward/record.url?scp=85161619118&partnerID=8YFLogxK

U2 - 10.1016/j.apacoust.2023.109466

DO - 10.1016/j.apacoust.2023.109466

M3 - Article

AN - SCOPUS:85161619118

SN - 0003-682X

VL - 211

JO - Applied Acoustics

JF - Applied Acoustics

M1 - 109466

ER -

Experimental investigation of composite metamaterial for underwater sound absorption

Abstract

Keywords

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