Results 41 to 50 of about 3,850 (165)
Ultrabroadband sound control with deep-subwavelength plasmacoustic metalayers
Nature Communications, 2023 Controlling audible sound requires inherently broadband and subwavelength acoustic solutions, which are to date, crucially missing. This includes current noise absorption methods, such as porous materials or acoustic resonators, which are typically ...
Stanislav Sergeev +2 more
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The acoustic absorption of textile curtains on the function of the fullness
Materiales de Construcción, 2013 Acoustic absorbing materials are applied to reduce noise levels in a room. They are also used to adjust the reverberation time an acoustic enclosure to use for which it´s designed. There are multi-purpose rooms for conferences, concerts, cinemas, etc. In this case, the acoustic absorbent materials should be changed according to use.
del Rey, Romina +3 more
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Journal of Mathematics in IndustryIn the automotive industry, the absorption coefficient of a porous material layer is usually measured in an alpha cabin, a reverberant chamber of reduced dimensions where the operational frequency range is limited and the absorbent sample size is ...
Laura Río-Martín +2 more
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Advanced ScienceThe reduction of noises, achieved through absorption, is of paramount importance to the well‐being of both humans and machines. Lattice structures, defined as architectured porous solids arranged in repeating patterns, are emerging as advanced sound ...
Xinwei Li +6 more
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Development of non-woven from recycled fabric selvedge wastes for functional sound absorption
International Journal of Sustainable Engineering, 2022 Reasons for recycling of waste include conservation of resources, reduction in the need for landfills, paying associated tipping fees and provision of low-cost raw materials for products.
Temesggen Feleke Fera +2 more
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Tunable Perforated Panel Sound Absorbers for Variable Acoustics Room Design
Applied SciencesVariable acoustics systems are promising engineering developments for multi-purpose rooms and workspaces in many buildings. However, due to space requirements associated with most of the tuning devices used for that purpose, these solutions are hardly ...
Jesús Carbajo +7 more
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Utilization and Study of Raw Groundnut Shell as a Source of Sound Absorbing Material
Journal of Natural Fibers, 2022 Natural biodegradable materials have the potential of an alternative traditional sound-absorbing material. These materials have the advantages of low cost, light in weight, easily available, eco-friendly, and nonpolluting.
Ulhas A. Malawade +3 more
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Effect of Painting on the Sound Absorption of Acoustic Materials [PDF]
The Journal of the Acoustical Society of America, 1940 A brief discussion is given of the properties of a material which cause it to absorb sound. Photographs are shown and the results of sound absorption measurements before and after painting are given for a number of different types of material. A brief discussion is given of the kind of paint which can be used and how it should be applied.
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Absorption of surface acoustic waves by graphene [PDF]
AIP Advances, 2011 We present a theoretical study on interactions of electrons in graphene with surface acoustic waves (SAWs). We find that owing to momentum and energy conservation laws, the electronic transition accompanied by the SAW absorption cannot be achieved via inter-band transition channels in graphene. For graphene, strong absorption of SAWs can be observed in
S. H. Zhang, W. Xu
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Jurnal Rekayasa Kimia & Lingkungan, 2009 The probability of application of palm fibre from arenga pinnata appear as best treatment for sound absorption material which can be used in controlling noise.
Zulfian Zulfian, Muhammad Sajidin
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