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건성마찰 소음에 대한 부식 영향도 실험연구

An Experimental Investigation of the Effect of Corrosion on Dry Friction Noise

  • 백종수 (공주대학교 기계자동차공학부) ;
  • 강재영 (공주대학교 기계자동차공학부)
  • Baek, Jongsu (Dept. of Mechanical Engineering, Kongju Nat'l Univ.) ;
  • Kang, Jaeyoung (Dept. of Mechanical Engineering, Kongju Nat'l Univ.)
  • 투고 : 2015.07.14
  • 심사 : 2015.09.10
  • 발행 : 2015.12.01

초록

본 연구에서는 왕복운동 및 회전운동 마찰 실험장치를 이하여 부식금속의 마찰소음특성을 파악하였다. 그 결과 부식금속이 소음발생 시키고 마찰소음의 크기를 증가시키는 것을 확인하였다. 또한, 마찰소음에서 부식의 영향은 마찰표면의 변화로부터 기인하는 것을 관찰할 수 있다. 마찰이 지속적으로 발생될 때 부식금속 마찰계수의 음의 기울기가 증가하여 부식이 되지 않은 금속에 비해 상대적으로 빠르게 불안정해 질 수 있음을 확인하였다.

This study investigates the friction noise characteristic in relation to the corrosion of metal by using the frictional reciprocating and pin-on-disk system. From the experiments, it is found that the corrosion of metal advances the onset time and increases the magnitude of friction noise. Further, it is observed that the effect of corrosion on friction noise stems from the alteration of tribo-surface during repetitive frictional motion. The alteration of the corrosive contact surface induces a negative friction-velocity slope, by which the corrosion of metal can generate dynamic instability faster than non-corrosion of metal.

키워드

참고문헌

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피인용 문헌

  1. Lyapunov exponent of friction-induced vibration under smooth friction curve vol.32, pp.8, 2018, https://doi.org/10.1007/s12206-018-0707-6