Journal of Industrial Technology (산업기술연구)
- Volume 31 Issue A
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- Pages.33-38
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- 2011
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- 1229-9588(pISSN)
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- 1598-1371(eISSN)
Sound Insulation Strategy of the Side Panels in a Tilting Train
틸팅열차 측면재의 차음 전략
- Published : 2011.02.28
Abstract
In an express tilting train, side wall insulating the noise from the exterior sound source consists of two parts. One is the layered composite panel including aluminum honeycomb, glass wool and nomex honeycomb. The other is the double glazed window. In this study, sound insulation performance of the two parts is investigated by mass law and experiment. Based on ASTM E2249-02, the intensity sound transmission loss (TL) is measured on the specimens of the two parts. Mass law deviation (MLD) is considered in order to compare the sound insulation performance in respect of weight. Contribution of each part to the sound insulation is analyzed and the sound insulation strategy for the interior noise reduction is investigated.
Keywords