자동차 교류발전기용 자석에 대한 가속 무고장시험방법 개발
Development of Accelerated Failure-free Test Method for Automotive Alternator Magnet
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초록
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 increasingconcern that some of the magnets produced could cause further problems after being assembled in the alternator. Based on thestandard alternator test (RS0008 : 2006), this paper has developed an accelerated failure-free test for magnets in alternator todemonstrate that assembled magnets will meet durability objective specified by the manufacturer. This guarantees the target lifeof the magnet with 90 percent reliability and 90 percent confidence level (R90C90). Temperature and rotation speed were selectedas accelerated stress factors.
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 increasingconcern that some of the magnets produced could cause further problems after being assembled in the alternator. Based on thestandard alternator test (RS0008 : 2006), this paper has developed an accelerated failure-free test for magnets in alternator todemonstrate that assembled magnets will meet durability objective specified by the manufacturer. This guarantees the target lifeof the magnet with 90 percent reliability and 90 percent confidence level (R90C90). Temperature and rotation speed were selectedas accelerated stress factors.
참고문헌 (25)
- Zhang, X.Q., "Performance test and data acquisition of voltage regulator for automotive alternator", International Conference on Transportation Mechanical and Electrical Engineering (TMEE), pp.707~710 (2011)
- "PC based automotive of alternator performance testing"[URL]
- Sim, K., Koo, "Development and performance measurement of micro-power pack using micro-gas turbine driven automotive alternators", Applied Energy, 102, pp.309~319 (2012)
- "ISO 8854(E), Road vehicles-Alternators with regulators- Test methods and general requirements", International Organization for Standardization, ~ (2012)
- SAE J56, "Road vehicles-Alternators with regulators- Test methods and general requirements", SAE Standard, Society of Automotive Engineers, ~ (1999)
- "RS R0008, Alternators for automobiles", Korean Standard, ~ (2006)
- Azianti Ismail, "브레이크 패드 신뢰성향상을 위한 DFR프로세스 개발", 산업경영시스템학회지, 35(3), pp.180~186 (2012), 한국산업경영시스템학회
- Krasich, M., "Improvement of sequential probability ratio tests by acceleration and automation of test planning", Annual Reliability and Maintainability Symposium (RAMS) Proceedings, 475(481) (2005)
- Krasich, M., "Accelerated reliability demonstration and assurance test design", Annual Reliability and Maintainability Symposium (RAMS) Proceedings, pp.1~6 (2010)
- Tal, O., "Reliability demonstration for safety-critical systems", IEEE Transactions on Reliability, 50(2), pp.194~203 (2001)
- Guo, H., "Reliability estimation for one-shot systems with zero component test failures", Annual Reliability and Maintainability Symposium(RAMS) Proceedings, pp.A1~7 (2010)
- Willits, C.J., "Series-system reliability-estimation using very small binomial samples", IEEE Transactions on Reliability, 46(2), pp.296~302 (1997)
- Jin, T., "Unbiased variance estimates for system reliability estimate using block decompositions", IEEE Transactions on Reliability, 57(3), pp.458~464 (2008)
- McKane, S.W., "Sample size and number of failure requirements for demonstration tests with log-location-scale distributions and failure censoring", Technometrics, 47(2), pp.182~190 (2005)
- Sun, Q., "A zero-failure reliability demonstration approach based on degradation data", International Conference on Quality Reliability Risk Maintenance and Safety Engineering, pp.947~952 (2012)
- Reliability improvement of B4.5R magnet characteristic in automotive starter motor, "Ministry of Trade Industry and Energy", Ssangyong Materials, 75~ (2007)
- Bertsche, B., "Reliability in automotive and mechanical engineering : determination of component and system reliability", pp.268~ (2008), Springer
- Barringer, H.P., "Weibull database", Weibull database, ~ (2000)
- Harter, H.L., "An evaluation of exponential and Weibull test plans", IEEE Transactions on Reliability, 25(2), pp.100~104 (1976)
- Jiang, R., "Influence factors and range of the Weibull shape parameter", 7th Int. Conf. Mathematics Methodology Reliability, pp.238~243 (2011)
- 권영일, "와이불수명분포를 갖는 제품의 신뢰성인증시험에서 형상모수의 영향분석", 신뢰성 응용연구, 11(3), pp.225~234 (2011), 한국신뢰성학회
- "MIL-STD-202G Method 108A. Life at elevated ambient temperature", Military Stand, Department of Defense, ~ (2002)
- 김형민, "환경 온도변화에 대한 자동차용 엔진마운트의 수명 예측", 신뢰성 응용연구, 13(1), pp.65~76 (2013), 한국신뢰성학회
- Whaley, D.M., "Extracting more power from the Lundell car alternator", Australasian Universities Power Engineering Conference (2004)
- 정찬홍, "안전성을 고려한 고효율 목재펠릿 보일러 개발", 신뢰성 응용연구, 12(1), pp.35~46 (2012), 한국신뢰성학회