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타이어/노면에 대한 Pass-by Noise 특성 연구
강영규(Young Kyu Kang),오약전(YagJeon Oh) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.4
It is well known that tire/road factors have a large influence on overall tire performance. In this paper, the basic study on the effects of tire/road factors on the pass-by noise performance of tire labeling has been carried out through experimental tests. The tire pass-by noise is affected by road characteristic factors, especially great ly influenced by road friction coefficient, and the next dominant factor is road chipping size. For several authorized pass-by noise test tracks, the pass-by noise correlation test has been done to know the test site effect, which results in 2~3dB(A) variation of pass-by noise level. Finally, it is shown that the winter tire is differently influenced by the passby noise test track characteristics, as compared to all-season tire and summer tire.
타이어 패턴/ 구조 설계에 대한 콘크리트 소음 기여도 연구
김건호(Kunho Kim),강영규(YoungKyu Kang),오약전(YagJeon Oh) 한국소음진동공학회 2013 한국소음진동공학회 학술대회논문집 Vol.2013 No.4
Nowadays concrete pavement is increasing, since it is more durable than asphalt pavement. And the concrete pavement with lateral rain groove may induce high level of concrete whine noise as pure tone. In this paper, the design factor for good concrete whine noise is considered in view of tire pattern and structure design. In respect of tire pattern design, the tire having a cap tread with high center part stiffness and low shoulder part stiffness shows best concrete whine noise performance. And in respect of tire structural design, the tire with a thick center part of cap tread and low tread part stiffness show best concrete whine noise performance.