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http://dx.doi.org/10.4491/KSEE.2014.36.9.597

Comparison of Sound Transmission through Single and Double-layer Polymer Panels  

Kim, Il-Ho (Korea Institute of Civil Engineering and Building Technology.University of Science & Technology)
Lee, Ju Haeng (Korea Institute of Civil Engineering and Building Technology.University of Science & Technology)
Son, Jin-Hee (Korea Noise Vibration Professional Engineering Association)
Publication Information
Journal of Korean Society of Environmental Engineers / v.36, no.9, 2014 , pp. 597-603 More about this Journal
Abstract
The aim of the present study is to compare sound performance depending on thickness, materials, and structure of polymer soundproof panels consisting of PC, PMMA, HDPE, and PP, respectively. As a result of comparing sound transmission loss (STL) of single layer panel made of four types of polymer, the better sound transmission loss was obtained in order of PC, PMMA, HDPE, and PP, which was obviously followed mass law. 8 mm of single panel showed 5~6 dB(A) greater STL than that of 4 mm panels and lower frequency for coincidence effect so that STL of 8 mm panels decreased around 4,000~5,000 Hz, indicating less STL of 4 mm panels than those of 8 mm. When it comes to structure, 4 mm panels with air layer appeared similar value of STL with 8 mm single panels under 300 Hz. In range of high frequency above 2,000 Hz, 4 mm panels with air layer performed better than 8 mm of single layer panel while resonance effects were observed at 500~630 Hz. It was found that these results could be practically utilized as fundamental data for noise barriers design considering the change to each condition.
Keywords
Double-layer Panel; Noise Barrier; Sound Insulation Properties; Sound Transmission Loss;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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