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진동 파워 흐름 측정을 이용한 승용차 부우밍 소음원 규명에 관한 연구
고성규(Sungkyu Koh),이상권(Sangkwon Lee),최병욱(Byunguk Choi),도종구(Jonggu Do),정승균(Seongkyun Jung) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Reduction of structure-borne noise of the compartment in a car is an important task in automotive engineering. Many methods which analyze noise transfer path have been generally used for structure-borne noise. These methods<br/> are useful in solving particular problem but do not quantify the effectiveness of vibration isolation of each isolator of<br/> a vehicle. To quantify the effectiveness of vibration isolation, the vibrational power flow measurement has been used for a simple isolation system or a laboratory based isolation system. This paper identifies transfer path of booming noise of a car with in-line 3 cylinder diesel engine using the vibrational power flow measurement and vibro-acoustic transfer function. It is found that the main source of noise is the rear roll mount.