지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
PURPOSES : The purpose of this study is to eliminate the noise of the vehicle after measuring the friction noise obtained from the NCPX (Noble Close ProXimity) method. The pure friction noise between the tire and road pavement could be determined from filtering the compositeness of sound and the influence of the vehicle noise. METHODS: The noise magnitude could be determined by analyzing the sound pressure level (SPL) and sound power level (PWL) along with the noise frequency of a FFT (Fast Fourier Transform) analysis as well as CPB (Constant Percentage Bandwidth) analysis. RESULTS: When the test for measuring the friction noise originated somewhere between tire and road pavement is performed with NCPX method, it must be fulfilled by attaching the surface microphone near the tire. In this condition, the surface microphone can measure the friction noise occurred at between tire and pavement, the chassis noise from the engine and power transfer units, the fluctuating aerodynamic noise, and the turbulence noise directly affected to the surface microphone. By using the NCPX method, the noise occurred at the vehicle must be eliminated for measuring the friction noise between tire and pavement from the traffic noise. CONCLUSIONS: The vehicle's testing engine noise depends on the vehicle and road types. The effect of vehicle's engine noise is less than the friction noise occurred at between tire and pavement at less than 1% effect.
목차
등록된 정보가 없습니다.
참고문헌 (10)
참고문헌 신청
Chul-Hwan, Kim / 2007 / A Study on Comparison of Highway Traffic Noise Prediction Models using in Korea / Proceedings of 2007 Korean Society for Noise and Vibration Engineering :1~4
이상권 / 2006 / SUV용 액슬의 소음원 규명 및 소음 저감을 위한 액슬의 구조변경에 관한 연구 / 한국소음진동공학회논문집 16(6):582~592
Mun, S. / 2007 / Influence of pavement surface noise : Korea Highway Corporation test road / Canadian Journal of Civil Engineering 34:809~816
Mun, S / 2008 / Development of a highway traffic noise prediction model that considers various road surface types / Applied Acoustics 69:1120~1128
Mun, S / 2008 / Determination of the sound power levels emitted by various vehicles using a novel testing method / Applied Acoustics 69:185~195
이상권 / 2006 / SUV용 액슬의 소음원 규명 및 소음 저감을 위한 액슬의 구조변경에 관한 연구 / 한국소음진동공학회논문집 16(6):582~592
Mun, S. / 2007 / Influence of pavement surface noise : Korea Highway Corporation test road / Canadian Journal of Civil Engineering 34:809~816
Mun, S / 2008 / Development of a highway traffic noise prediction model that considers various road surface types / Applied Acoustics 69:1120~1128
Mun, S / 2008 / Determination of the sound power levels emitted by various vehicles using a novel testing method / Applied Acoustics 69:185~195
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