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http://dx.doi.org/10.4491/KSEE.2013.35.8.592

Sound Insulation Properties of Polymer Soundproof Panels  

Lee, Woo-Mi (Environmental Engineering Research Division, Korea Institute of Construction Technology)
Lee, Ju Haeng (Department of Construction Environmental Engineering, University of Science and Technology)
Son, Jin-Hee (Korea Noise Vibration Professional Engineer Association)
Kim, Il-Ho (Environmental Engineering Research Division, Korea Institute of Construction Technology)
Park, Jae-Roh (Environmental Engineering Research Division, Korea Institute of Construction Technology)
Kim, Kwang Soo (Environmental Engineering Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.35, no.8, 2013 , pp. 592-597 More about this Journal
Abstract
It is widely known that the sound insulation of soundproof panel is highly correlated to two factors, surface density of material and the frequency of noise. Accordingly, the character of traffic noise released in actual situation is important requisite for determining thickness to determine surface density and material of soundproof panel. This present study selected polymer panel with advantage of light weight and workability and evaluates according to frequency of traffic noise. Polypropylene (PP) and high-density polyethylene (HDPE) were selected as subjects based on economic valuation and efficiency. The sound transmission loss of selected polymer panels were compared with the currently used panels such as polycarbonate (PC) and polymethyl methacrylate (PMMA) depending on thickness and materials. As a result, PC showed the highest sound transmission loss followed by PMMA, HDPE, and PP in range of mass law. In terms of acoustic performance on thickness, the transmission loss increased with thickness of soundproof panel meanwhile coincidence dip was observed in lower frequency where had reduced transmission loss. Therefore, it is suggested that after determining target frequency, the kind of materials and thickness of soundproof panel need to be designed so that traffic noise can be more efficiently reduced.
Keywords
Noise Barrier; Soundproof Panel; Sound Transmission Loss; Sound Insulation Properties;
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