Results 21 to 30 of about 22,669 (255)

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

open access: yesMedžiagotyra, 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   +5 more
doaj   +1 more source

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

open access: yesJournal 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

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

open access: yesFrontiers 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   +4 more
doaj   +1 more source

Sound absorption performance of micro-perforated plate sandwich structure based on triply periodic minimal surface

open access: yesJournal of Materials Research and Technology, 2023
The sandwich structure based on Triply periodic minimal surface (TPMS) is a lightweight and high-strength multifunctional composite material that combines the versatility of heat exchange, impact resistance, and energy absorption, and has been widely ...
Pengfei Zhang   +8 more
doaj   +1 more source

Improved low-frequency sound absorption of porous silicone rubber resonance sheet with periodic cavities

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
Since the development of advanced sound absorption material is highly critical in noise control applications, anechoic coatings, and acoustic metamaterials, both fabrication technology and structure design are significant in the achievement of broadband ...
Longgui Peng   +4 more
doaj   +1 more source

Optimization of Sound Absorption Performance of OGFC Asphalt Mixture Based onAcoustic Parameters [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban
In the phenomenological model, the sound absorption coefficient of porous materials was used to explaintakes into account the energy dissipation generated by the propagation of sound waves in the void structure.
WU Wenliang, LI Chenyue, DAI Shenglin
doaj   +1 more source

Improvement of the sound absorption performance of jute felt-based sound absorbers using micro-perforated panels

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2017
In industrial and architectural applications, noise can be controlled using sound-absorbing materials. Natural materials are now gaining importance in the noise control engineering as they have advantages like low cost, eco-friendly, easy to produce, etc.
Pritesh V Bansod   +2 more
doaj   +1 more source

Research on the low-frequency sound absorption characteristics of coiled Helmholtz cavity acoustic metamaterials

open access: yesAdvances in Mechanical Engineering, 2022
A coiled Helmholtz cavity acoustic metamaterial structure, which consists of three perforated plates, two channel layers and an air back cavity, is designed to address the problem of poor absorption of low-frequency band noise by conventional acoustic ...
Hongyu Cui, Zhaoping Hu, Haoming Hu
doaj   +1 more source

Damping and sound absorption properties of polymer matrix composites: A review

open access: yesPolymer Testing, 2021
This review article provides a comprehensive overview of fiber and nanoparticle reinforced polymer matrix composites (PMC) for their damping and sound absorption properties.
Md Abu Shaid Sujon   +2 more
doaj   +1 more source

Sound Absorption of Microperforated Panel Made from Coconut Fiber and Polylactic Acid Composite

open access: yesJournal of Natural Fibers, 2022
This paper highlights the sound absorption performance of microperforated panel (MPP) made from coconut fiber and polylactic acid (PLA) composite named as biocomposite microperforated panel (BMPP).
Desmond Daniel Chin Vui Sheng   +2 more
doaj   +1 more source

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