Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Electrical Lifetime Estimation of a Relay by Accelerated Life Test

가속수명시험을 이용한 릴레이의 전기적 수명예측

  • 김재중 (한양대학교 신뢰성분석연구센터) ;
  • 장석원 (한양대학교 신뢰성분석연구센터) ;
  • 손영갑 (안동대학교 기계공학부)
  • Published : 2008.05.01
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Abstract

This paper proposes a way to predict electrical lifetime of a relay using Accelerated Life Testings (ALTs). The relay of interest mounting on printed circuit boards is usually under an inrush current stress. The inrush current is generated and accelerated through controlling a lamp switching device in the ALT. We find that the dominant failure mechanism under high levels of inrush current would be contact welding in the contact surface of the relay and the contact welding process is accelerated according to increase in inrush current. The electrical lifetime model based on Inverse Power Law in term of inrush current is proposed, and parameters characterizing relay's lifetime distribution are statistically estimated using ALTA 6 PRO software.

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References

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