Results 21 to 30 of about 2,523,561 (213)
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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Enhanced Low-Frequency Sound Absorption of a Porous Layer Mosaicked with Perforated Resonator
Polymers, 2022 A composite structure composed of a porous-material layer mosaicked with a perforated resonator is proposed to improve the low-frequency sound absorption of the porous layer. This structure is investigated in the form of a porous-material matrix (PM) and
Xin Li, Bilong Liu, Qianqian Wu
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A review on polymer-based materials for underwater sound absorption
Polymer 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
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Journal of the Korean Wood Science and Technology, 2022 In this study, I used wood pellets as an eco-friendly sound-absorbing material. The aim of the research was to analyze the effect of the filling height of wood pellets on sound absorption.
E. Jang
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Materials, 2022 For the common difficulties of noise control in a low frequency region, an adjustable parallel Helmholtz acoustic metamaterial (APH-AM) was developed to gain broad sound absorption band by introducing multiple resonant chambers to enlarge the absorption ...
Xiaocui Yang +6 more
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Sound absorption property of openpore aluminum foams [PDF]
China Foundry, 2007 This paper presents a study on sound absorption property of aluminum foam by evaluating its sound absorption coefficients using standing wave tube method. Experimental results showed that the average values of sound absorption coefficients (over the test
WANG Fang, WANG Lu-cai, WU Jian-guo
doaj
Nihon Kikai Gakkai ronbunshu, 2016 In this paper, we report the use of sound-absorbing materials, specifically sound-absorbing structures of bundled rice straws, that are oblique arranged incident to the sound waves.
Shuichi SAKAMOTO +3 more
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A hybrid acoustic structure for low-frequency and broadband underwater sound absorption
Journal of Low Frequency Noise Vibration and Active Control, 2022 The underwater anechoic coating with local resonant units is an effective method to achieve low-frequency sound absorption. However, the structure obtained in this way is not satisfactory in the sound absorption effect of mid-high frequency bands ...
Xinyu Jia +4 more
semanticscholar +1 more source
Improved sound absorption with 3D-printed micro-perforated sandwich structures
Journal of Materials Research and TechnologyThe micro-perforated sandwich structure based on triply periodic minimal surfaces (TPMS) is a lightweight, high-strength and multi-functional structure, which integrates heat exchange, impact resistance, energy absorption, etc., and has been widely used ...
Peng-Fei Zhang +8 more
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Virtual and Physical PrototypingThis study proposes a sandwich structure of triply periodic minimal surface (TPMS) based on the theory of micro-perforated plates. This structure was processed using laser selective melting (SLM) with the acoustic-vibration theoretical model established ...
Zhonghua Li +7 more
semanticscholar +1 more source