Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2008.06a
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- Pages.2185-2190
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- 2008
Considerations on the Factors Reducing the Sound Transmission Loss of the Honeycomb Panels
허니콤재의 투과손실 저하 인자에 대한 고찰
- Published : 2008.06.12
Abstract
In a high speed train, multi-layered panels for floor, side wall and roof are important sound insulating part. As these multi-layered panels require high bending strength vs. weight, corrugated steels or aluminium honeycomb panel are generally used. However, with some inevitable factors, these panels show lower sound insulation performance than that of the plate with the same weight. Transmission loss(TL) often severely decreases in a particular frequency range because of the decrease of the critical frequency, occurrence of local resonance modes and cavity resonance modes, which are not shown in a plate. In this study, frequency range and cause of the TL drop are investigated on the corrugated and honeycomb panels.
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