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논문 기본 정보

자료유형
학술대회자료
저자정보
채기상 (현대자동차) 유지우 (현대자동차) 이상우 (현대자동차) 이승 (대한솔루션)
저널정보
한국자동차공학회 한국자동차공학회 춘계학술대회 2015 KSAE 부문 종합학술대회
발행연도
2015.5
수록면
748 - 753 (6page)

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초록· 키워드

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Sound insulation performance of vehicle dash system is determined by a superposition of the performances of panel, sealer, vibration deadner, sound package, and pass-throughs. Up to now, the sealer treatment"s effects on insulation performance of dash are not clear. Therefore, it is difficult to include these effects in virtual development phase. In this paper, the sealer’s effects are experimentally studied in the viewpoint of Sound Transmission Loss (STL) of dash structure. A test structure of vehicle dash is prepared for the measurement of STL. The locations of sealer treatment are classified into a few characteristic regions, and STL measurements are performed under various conditions of sealer treatment. Additionally, experiments for vibration deadener" effects are also performed and compared to the results of selaer treatement. The summary of the experiments are as following: 1) STL of dash structure without sealer treatment is lower as much as 9 dB in the high frequencies such as above 1kHz, compared to maximum sealer treatment. 2) For locations of sealer treatment, the compartment-side is more important compared to the engine room-side. 3) For the case of dash panel with a large flat reinforement, at which air gap exists between dash panel and reinforcement, the sealer treatment along the edge of the reinforcement could contribute to the enhancement in STL. 4) Compared to the application of sealer treament, application of vibration deadener has a small sensitivity in STL in the high frequencies.

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