Results 1 to 10 of about 313,311 (205)

A review on polymer-based materials for underwater sound absorption

open access: yesPolymer Testing, 2021
Greater demands for underwater sound absorption materials have been growing due to the concern about underwater noise control in water. Among the range of existing materials, polymer-based materials are increasingly being utilized as underwater sound ...
Yifeng Fu   +3 more
doaj   +3 more sources

Sound Absorption in Glasses

open access: yesSSRN Electronic Journal, 2022
Review on sound absorption in glasses, 23 pages, 17 ...
Buchenau, U.   +4 more
openaire   +5 more sources

Research Progress on Sound Absorption of Electrospun Fibrous Composite Materials

open access: yesNanomaterials, 2022
Noise is considered severe environmental pollutant that affects human health. Using sound absorption materials to reduce noise is a way to decrease the hazards of noise pollution.
Xiuhong Li   +5 more
doaj   +1 more source

Study on the Low-Frequency and Broadband Sound Absorption Performance of an Underwater Anechoic Layer with Novel Design

open access: yesJournal of Marine Science and Engineering, 2023
To further improve the low-frequency broadband sound absorption capability of the underwater anechoic layer (UAL) on the surface of marine equipment, a novel sound absorption structure with cavities (NSSC) is designed by adding resonators and honeycombs ...
Jinshun Hu   +5 more
doaj   +1 more source

Sound absorption properties for multi-layer of composite materials using nonwoven fabrics with kapok

open access: yesJournal of Industrial Textiles, 2022
Kapok fiber with high degree of hollow and small fiber diameter has excellent sound absorption. To optimize the sound absorption characters at the low frequency, sound absorption coefficients and specific surface impedance of two-layer, three-layer, and ...
Xueting Liu   +2 more
doaj   +1 more source

Recent study progress of underwater sound absorption coating

open access: yesEngineering Reports, 2023
Based on the recent development of underwater sound absorption coatings, this paper analyzes the evolution of underwater sound absorption coatings from two aspects: traditional structures and metamaterials.
Zhicheng Zhang, Yanbiao Zhao, Nansha Gao
doaj   +1 more source

Investigation of sound absorption capability of pine (Pinus densiflora) cone particles

open access: yesJournal of Wood Science, 2023
In this study, the sound absorption capability of pine (Pinus densiflora) cone particles was investigated as an alternative and eco-friendly, sound-absorbing material.
Eun-Suk Jang, Chun-Won Kang
doaj   +1 more source

Noise reduction with coupled prismatic tubes [PDF]

open access: yes, 2000
The present investigation focuses on an accurate description of sound absorption. Within this research a new technique to create sound absorption for a predefined frequency band has been developed. Additionally, a simple and efficient numerical model for
Eerden, Fredericus Joseph Marie van der
core   +9 more sources

A Semi-Empirical Model for Sound Absorption by Perforated Plate Covered Open Cell Foam and Improvements from Optimising the Perforated Plate Parameters

open access: yesApplied Sciences, 2022
Composite structures can be designed with specific parameters for efficient sound absorption in specific frequency bands; however, determining the optimal parameters and topology to maximize sound absorption is a computationally challenging task. In this
Junzhe Zhang   +3 more
doaj   +1 more source

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

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

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