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      고속철도차량용 알루미늄 압출재의 차음성능에 대한 폼 충전효과

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      https://www.riss.kr/link?id=A108304708

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      다국어 초록 (Multilingual Abstract)

      The aluminum extruded panel used for a high speed train shows the largest contribution to sound insulation performance of the train body. However, comparing with the flat panel having the same weight, the transmission loss falls sharply in the local resonance frequency band. Such fall of transmission loss can be improved by increasing the damping of local resonance. This study examines the charging effect of an urethane foam on the aluminum extruded panel of a high speed train. We charged the urethane foam with different mass density and in different way in the core part of the extruded panel. We measure the transmission loss and compare the sound insulation performance according to the density and charging method. Finally, Improvement effect of the transmission loss is compared and analysed in aspect of weight increment.
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      The aluminum extruded panel used for a high speed train shows the largest contribution to sound insulation performance of the train body. However, comparing with the flat panel having the same weight, the transmission loss falls sharply in the local r...

      The aluminum extruded panel used for a high speed train shows the largest contribution to sound insulation performance of the train body. However, comparing with the flat panel having the same weight, the transmission loss falls sharply in the local resonance frequency band. Such fall of transmission loss can be improved by increasing the damping of local resonance. This study examines the charging effect of an urethane foam on the aluminum extruded panel of a high speed train. We charged the urethane foam with different mass density and in different way in the core part of the extruded panel. We measure the transmission loss and compare the sound insulation performance according to the density and charging method. Finally, Improvement effect of the transmission loss is compared and analysed in aspect of weight increment.

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      목차 (Table of Contents)

      • ABSTRACT
      • 1. 서론
      • 2. 우레탄 폼의 제원
      • 3. 투과손실 측정
      • 4. 측정결과
      • ABSTRACT
      • 1. 서론
      • 2. 우레탄 폼의 제원
      • 3. 투과손실 측정
      • 4. 측정결과
      • 5. 중량대비 차음성능 평가
      • 6. 결론
      • 참고문헌
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