Journal
APPLIED PHYSICS EXPRESS
Volume 14, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.35848/1882-0786/ac1980
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Funding
- Science and Technology Project of Anhui Province Housing and Urban-Rural Construction [2020-YF25]
- Doctoral Fund of Anhui Jianzhu University [2020QDZ45]
- Natural Science Research Project of Education Department of Anhui Province [KJ2020JD17]
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The study introduces a low-frequency dual-band perfect acoustic absorption metaporous material, constructed by introducing Helmholtz resonance and Fabry-Perot resonance, achieving high-efficiency broadband acoustic absorption and showing potential for reducing low-frequency noise.
We present a low-frequency dual-band (303 and 356 Hz) perfect acoustic absorption (PA) metaporous. The metaporous composite is constructed by introducing Helmholtz resonance and Fabry-Perot resonance in porous materials. Our simulations show that the dual-band metaporous absorber has an ultra-thin thickness (lambda/18 for 356 Hz). Using the coupling of the three dual-band PA absorbers, the low-frequency high-efficiency (>90%) broadband acoustic absorption is obtained in the frequency range of 332-562 Hz. Experiments confirm the dual-band perfect acoustic absorption and high-efficiency broadband acoustic absorption. The metaporous composite could have promising potential for low-frequency noise reduction.
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