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http://dx.doi.org/10.3795/KSME-C.2016.4.2.123

Development of Improvement Technology of Sound Insulation Performance of Unitex Structure  

Byeon, Jun-Ho (Dept. of Advanced Mechanical Engineering, Graduate School, Kangwon Nat'l Univ.)
Lee, Joong-Hyeok (Dept. of Advanced Mechanical Engineering, Graduate School, Kangwon Nat'l Univ.)
Kim, Seockhyun (Dept. of Advanced Mechanical Engineering, Kangwon Nat'l Univ.)
Lee, Jae-Joon (Shinil Chemical co., ltd.)
Ki, Ho-Cheol (Hyundai - Rotem co.)
Publication Information
Transactions of the KSME C: Technology and Education / v.4, no.2, 2016 , pp. 123-130 More about this Journal
Abstract
Unitex is widely used for the floor structure of urban railway vehicles because it shows good structural safety and heat insulation, has long life, and lowers the cost owing to easy installation. However, in spite of these merits, Unitex has a limit to the sound insulation performance, which is very important in vehicle structure. It shows a sound transmission loss considerably lower than the mass law value, which indicates the sound insulation performance per unit weight. Recently, railway vehicle manufacturers and Unitex supplier have tried to improve the sound insulation performance of Unitex, but meaningful results have not been achieved yet. Through the industry-university collaborative research, we propose structural improvement methods to increase the sound transmission loss by more than 5dB and we then verify the effect by performing experiments.
Keywords
Railway Vehicle; Sound Transmission Loss; Unitex;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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