Results 11 to 20 of about 21,617 (259)

Acoustic performances of silicone foams for sound absorption [PDF]

Journal of Cellular Plastics, 2017
The aim of this study is to investigate the link between the elaboration process, the microstructure and the acoustic behaviour of silicone foams obtained using a two-component silicone. Different parameters such as the ratio of components, the addition of a thinning agent and the curing temperature are varied, with the objective of understanding the ...
Ahmed Abbad, Kévin Jaboviste, Morvan Ouisse, Nicolas Dauchez   +3 more
openaire   +1 more source

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
doaj   +1 more source

On-demand optimize design of sound-absorbing porous material based on multi-population genetic algorithm

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, Liu Shengfu, Wu Haiquan, Zhang Chengchun, Xu Jinkai, Yu Huadong   +5 more
doaj   +1 more source

Highly efficient acoustic absorber designed by backing cavity-like and filled-microperforated plate-like structure

Materials & Design, 2023
Crowded living conditions and increasingly severe noise problems necessitate the development of a low-thickness sound absorption material with remarkable sound absorption performance.
Lize Qi, Chao Zhi, Jiaguang Meng, Yongzhen Wang, Yaming Liu, Qingwen Song, Qian Wu, Liang Wei, Yang Dai, Jing Zou, Menghe Miao, Lingjie Yu   +11 more
doaj   +1 more source

Low-frequency sound absorption performance of composite acoustic metamaterials with rotational labyrinth channels and micro-perforated panels [PDF]

AIP Advances
In 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, Guang-jun Zhang, Jing-Bo Zhao, PeiZhou Hu, Hong Liu   +4 more
doaj   +1 more source

Numerical design and optimization of metamaterials for underwater sound absorption at various hydrostatic pressures

Journal of Low Frequency Noise, Vibration and Active Control, 2023
Underwater sound absorption materials with a stable performance at various hydrostatic pressures are important for marine applications. However, most studies about underwater sound absorption materials only focused on the performance at atmospheric ...
Yifeng Fu, Huming Wang, Pan Cao
doaj   +1 more source

Study on Sound Absorption Performance of Aluminum Foam Combination

Journal of Physics: Conference Series, 2023
Abstract Aluminum foam is a kind of new material with a large number of holes distributed in aluminum alloy. It has the characteristics of lightweight, sound absorption, energy absorption and vibration reduction, and other porous materials. Aluminum foam has good acoustic performance.
Tairu Jiang, Yonghua Wang, Jinkai Xu, Huadong Yu   +3 more
openaire   +1 more source

Study of the Sound Absorption Performance of Ethylene-Vinyl Acetate Foam Materials

Medžiagotyra, 2019
Ethylene-Vinyl Acetate (EVA) polymer foam was prepared using a mold for this investigation. The effect of the cell structure parameters and pore filling gas type on the sound absorption performance of the EVA foam materials were analyzed in terms of ...
Wei GONG, Yu Long MA, Da Ming BAN, Xiao Gang YIN, Li HE, Hai FU   +5 more
doaj   +1 more source

Underwater sound absorption performance of acoustic metamaterials with multilayered locally resonant scatterers

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, Guoyong Jin, Ruijie Liu, Tiangui Ye, Yaqiang Xue   +4 more
doaj   +1 more source

Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber

Frontiers in Materials, 2020
A novel membrane sound absorber based on the magnetorheological membrane (MRM) is developed for active sound absorption. Due to its good flexibility and stretch-ability, the MRM consisting of carbonyl iron particles (CIPs) and polydimethylsiloxane ...
Chuanlin Sun, Xufeng Cao, Xiaoling Zhou, Xinglong Gong, Shouhu Xuan   +4 more
doaj   +1 more source