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주석 도금한 커넥터의 접촉 하중의 변화에 의한 전기 접촉저항 변화에 관한 연구

A Study on the Variation of Electric Contact Resistance Due to Change in Contact Force in a Tin-plated Connector

  • 유환신 (호원대학교 자동차기계공학과) ;
  • 오만진 (서울과학기술대학교 기계.자동차공학과) ;
  • 박형배 (경기과학기술대학교 자동차과)
  • Yu, Hwan-Shin (Department of Automotive & Mechanical Engineering, Howon University) ;
  • Oh, Man-Jin (Department of Mechanical & Automotive Engineering, Seoul National University of Science and Technology) ;
  • Park, Hyung-Bae (Department of Automotive Engineering, Gyonggi College of Science and Technology)
  • 투고 : 2014.08.05
  • 심사 : 2014.08.21
  • 발행 : 2014.08.30

초록

전기 커넥터에 영향을 주는 프레팅 부식 요인 중 하나인 접촉 부하의 영향을 조사하기 위하여, 프레팅 부식 표본 쌍을 두께 $3{\mu}m$의 두께를 갖는 주석으로 도금된 황동 표본을 사용하여 제조하였다. 접점의 전기저항은 프레팅 부식 시험 기간 동안 측정되었다. 프레팅 주기에서 저항은 증가하였다. 저항의 변화는 3단계로 나눌 수 있다. 첫 번째 단계는 미미하고 안정적인 저항을 나타내었다. 두 번째 단계는 저항이 꾸준한 증가를 보여 주었다. 그리고 세 번째 단계는 매우 높고 간헐적인 저항을 보여주었다. 실패주기(Nf)와 접촉력(P) 사이의 관계는 다음과 같이 표현될 수 있다. 각각의 하중, 변위, 온도 등 다양한 조건에서 프레팅 테스트를 통해 다양한 환경 조건 하에서 매우 높고 간헐적인 저항에 대응 전기 커넥터의 실패주기 예측공식의 표현이 가능할 것이다.

In order to investigate the effect of contact load, which is one of the fretting corrosion factors affecting the electric connector, a coupled fretting corrosion specimens were prepared using a tin-plated brass coupon with a thickness of $3{\mu}m$. Electric resistance of the contact was measured during the fretting corrosion test period. There was increase in resistance with fretting cycles. The change in resistance can be classified by 3 stages. The first stage exhibited low and stable resistance. Second stage showed steady increment of the resistance and third stage showed very high and intermittent resistance. The relationship between the failure cycle (Nf) and contact force (P) can be drawn as; It is possible to draw the prediction equation for the failure cycle of the electric connector corresponding to the very high and intermittent resistance under various environment conditions through the fretting tests under various conditions such as load, displacement, temperature.

키워드

참고문헌

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피인용 문헌

  1. Palladium-Nickel Alloy Electrodeposition Using Ethylenediamine as Complexing Agent vol.47, pp.5, 2014, https://doi.org/10.5695/JKISE.2014.47.5.215