Results 21 to 30 of about 194,541 (227)
sound absorption coefficient [PDF]
, 2012 The accuracy of a method [Wijnant et al., “Development and applica- tion of a new method for the in-situ measurement of sound absorption”, ISMA 31, Leuven, Belgium (2010).], for measurement of the effective area-averaged in situ sound absorption ...
Wijnant, Ysbrand H. +5 more
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Optimization of Sound Absorption Performance of OGFC Asphalt Mixture Based onAcoustic Parameters [PDF]
Zhengzhou Daxue xuebao. Gongxue banIn 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
ENHANCING EGG CARTONS’ SOUND ABSORPTION COEFFICIENT WITH RECYCLED MATERIALS [PDF]
, 2017 Egg cartons have popularly been used as sound absorbers because they are inexpensive, easy to install and easily available. However, acoustic experts have demonstrated that egg cartons are bad sound absorbers. This study developed Enhanced Egg Carton –
Setyabudi, Herybert +2 more
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Akytojo betono garso absorbcijos tyrimai/Porous concrete sound absorption investigation
Journal of Civil Engineering and Management, 1996 Low-density porous concrete can be used as a sound absorbing material. This paper generalizes porous concrete sound absorption investigations. Porous concrete relative wave resistance modulus is longer than air wave resistance W=1 and that is why this
Antanas Laukaitis, Vytautas Lasauskas
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Sound Absorption Coefficient of Different Green Materials Polymer on Noise Reduction
International Journal of Innovative Technology and Exploring Engineering, 2020 One of the sources of noise pollution to environment is from the consumption of electrical and mechanical appliances usage at home and industries. Growth development and advancement of heavy equipment in construction work further emphasize the necessity ...
semanticscholar +1 more source
Investigation of sound absorption capability of pine (Pinus densiflora) cone particles
Journal 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
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Potensi Sekam Padi dan Jerami sebagai Alternatif Material Akustik
Physics Education Research Journal, 2020 Technology that is increasingly developing produces equipments in the form of information, communication, production, transportation and entertainment facilities. Most of the equipments produce noises. Noise can be reduced by using acoustic dampers. This
Ahmad Minanur Rohim +2 more
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بهداشت و ایمنی کار, 2021 Introduction: In recent years tend to use of natural fibers has increased in making sound absorbers. Fiber-based natural materials have low density, low production costs, and are biodegradable.
Reza Jafari Nodoushan +3 more
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Identification Of Press Brick Composition As A Sound Absorbers
Buletin Fisika, 2018 – Sound absorption research using the press brick made of cement and sand has been done. The research was conducted to determine the effect of mixture on the absorption coefficient value of sound of the brick.
Ni Made Wedayani +2 more
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Effect of non-acoustic properties on the sound absorption of polyurethane foams [PDF]
Journal of Theoretical and Applied Vibration and Acoustics, 2015 In this paper the influence of non-acoustic properties on the sound absorption coefficient of polyurethane foams as a porous medium is investigated. Biot’s equations with transfer matrix method, as the solution approach are employed to evaluate the sound
Mostafa Asadi +2 more
doaj +1 more source