Results 1 to 10 of about 22,711 (254)
Sound absorption performance of a conch-imitating cavity structure [PDF]
Science Progress, 2022 At present, in order to solve noise pollution, many experts are studying methods to improve the noise reduction performance of sound barriers and acoustic devices.
Suchao Xie +3 more
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Results in Physics, 2019 Although the conventional locally resonant acoustic metamaterials (LRAMs) have shown better sound absorption performance in the low frequency band, the effective frequency range of the sound absorption performance is quite narrow relatively.
Kangkang Shi +4 more
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Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy
Metals, 2018 The improvement of sound absorption performance of porous metal is a focus of research in the field of noise reduction. Influences of compression ratios on sound absorption performance of a porous nickel–iron (Ni–Fe) alloy were investigated.
Panfeng Bai +5 more
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Sound absorption performance of helically perforated porous metamaterials at high temperature
Materials & Design, 2023 A high-temperature theoretical model is established to investigate the sound absorption performance of helically perforated porous metamaterials (HPPM) at high temperature. Finite element simulations are carried out to validate the theoretical model, and
Weitao Zhang, Xuewei Liu, Fengxian Xin
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Preparation and sound absorption performance of low‐carbon fly ash cenosphere plates
International Journal of Ceramic Engineering & ScienceA series of low‐carbon fly ash cenosphere plates was prepared using solid waste based cementitious material as binder through a simple process; meanwhile, effects of cenosphere's particle size and size distribution on microstructure and properties were ...
Yongli Yi +5 more
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Materials & Design, 2019 Novel acoustic absorbers were fabricated by the compression and microperforation of the porous metal, which aimed to develop practical acoustic absorbers for the noise reduction.
Panfeng Bai +7 more
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Zhongguo Jianchuan Yanjiu, 2022 ObjectivesAn underwater anechoic coating layer laid on the hull surface of a submarine is squeezed under the action of high hydrostatic pressure, changing its shape and material parameters, which has a great impact on sound absorption performance ...
Wenkai DONG, Meixia CHEN
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Research on Low-Frequency Noise Control Based on Fractal Coiled Acoustic Metamaterials
Shock and Vibration, 2022 In this paper, a self-similar fractal coiled acoustic metamaterial is designed for the low-frequency noise control problem by combining a perforated plate and a coiled back cavity structure.
Hongyu Cui, Chengtao Liu, Haoming Hu
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e-Polymers, 2020 Porous material (PM) shows good sound absorption performance, however, the sound absorbing property of PM with different parameters are greatly different.
Wang Yonghua +5 more
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Low-frequency sound absorption performance of composite acoustic metamaterials with rotational labyrinth channels and micro-perforated panels [PDF]
AIP AdvancesIn this paper, a kind of novel acoustic metamaterial combined with a rotational labyrinth and a micro-perforated plate is designed. The design of the rotational labyrinth structure combined with micro-perforated plates endows the acoustic metamaterial ...
Xinxin Liu +4 more
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