Experimental Investigation of Creep Groan Noise

크립 그론 소음 특성에 대한 실험적 연구

  • Kang, Kyung Min (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Jeon, Hyun Cheol (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Kang, Yeon June (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Cho, Min Hyung (Research Engineer Team, Hyundai Mobis)
  • 강경민 (서울대학교 기계항공공학부) ;
  • 전현철 (서울대학교 기계항공공학부) ;
  • 강연준 (서울대학교 기계항공공학부) ;
  • 조민형 (현대 모비스 연구개발팀)
  • Received : 2012.05.02
  • Accepted : 2013.01.28
  • Published : 2013.05.01


Creep groan noise occurs at low frequencies immediately after releasing brake pressure or when a car stops. This noise can be used to predict problems in not only the brake system but also the vehicle system. Because of its complexity, it is difficult to determine its characteristics. Therefore, most improvements are conducted by changing the brake pad, and it still remains difficult to conduct a test using a vehicle. In this study, the characteristics of creep groan noise and the effects from a vehicle system are investigated by using vehicles and an NVH chassis-dynamometer through various tests. A new evaluation method for creep groan noise by using a vehicle is proposed, and the possibility of reduction schemes from the viewpoint of the vehicle system is confirmed from the results mentioned above.


Creep Groan;Brake Noise;Structural-Borne Noise


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