Journal of Korean Society of Industrial and Systems Engineering (산업경영시스템학회지)

Society of Korea Industrial and System Engineering (한국산업경영시스템학회)
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Development of Accelerated Failure-free Test Method for Automotive Alternator Magnet

자동차 교류발전기용 자석에 대한 가속 무고장시험방법 개발

  • Liu, Qiang (Department of Industrial and Management Engineering, Daegu University) ;
  • Ismail, Azianti (Department of Industrial and Management Engineering, Daegu University) ;
  • Jung, Won (Department of Industrial and Management Engineering, Daegu University)
  • ;
  • ;
  • 정원 (대구대학교 산업경영공학과)
  • Received : 2013.11.15
  • Accepted : 2013.11.29
  • Published : 2013.12.31
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Abstract

Many automotive components for power generation such as motors and alternators have been widely using ferrite magnets. To ensure a high level of efficiency could be achieved in an alternator, the assembled magnets must be in good enough durability. Recently, some hairline cracks have been found on the magnet produced by manufacturers in Korea. Thus, there is an increasing concern that some of the magnets produced could cause further problems after being assembled in the alternator. Based on the standard alternator test (RS0008 : 2006), this paper has developed an accelerated failure-free test for magnets in alternator to demonstrate that assembled magnets will meet durability objective specified by the manufacturer. This guarantees the target life of the magnet with 90 percent reliability and 90 percent confidence level (R90C90). Temperature and rotation speed were selected as accelerated stress factors.

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References

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