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Reliability Evaluation of an Oil Cooler for a High-Precision Machining Center  

Lee, Seung-Woo (Intelligent Machine Research Center, KIMM)
Han, Seung-Woo (Nano-Mechanical System Research Center, KIMM)
Lee, Hu-Sang (Intelligent Machine Research Center, KIMM)
Publication Information
International Journal of Precision Engineering and Manufacturing / v.8, no.3, 2007 , pp. 50-53 More about this Journal
Abstract
Improving the reliability or long-term dependability of a system requires a different approach from the previous emphasis on short-term concerns. The purpose of this paper is to present a reliability evaluation method for an oil cooler intended for high-precision machining centers. The oil cooler system in question is a cooling device that minimizes the deformation caused from the heat generated by driving devices. This system is used for machine tools and semiconductor equipment. We predicted the reliability of the system based on the failure rate database and conducted the reliability test using a test-bed to evaluate the life of the oil cooler. The results provided an indication of the reliability of the system in terms of the failure rate and the MTBF of the oil cooler system and its components, as well as a distribution of the failure mode. These results will help increase the reliability of oil cooler systems. The evaluation method can also be used to determine the reliability of other machinery products.
Keywords
Reliability evaluation; Reliability prediction; Reliability test; Failure mode; Failure distribution;
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Times Cited By Web Of Science : 2  (Related Records In Web of Science)
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  • Reference
1 Saleh, J. H. and Marais, K., 'Reliability: How Much is it Worth? Beyond its Estimation or Prediction, the (net) Present Value of Reliability,' Reliability Engineering and System Safety, Vol. 91, No.6, pp. 665-673, 2006   DOI   ScienceOn
2 Lee, S. W., Song, J. Y. and Lee, H. K., 'A Study on Reliability Evaluation for Core Units for Machine Tools,' Journal of Applied Reliability, Vol. 3, No.1, pp. 41-58, 2003
3 Wang, Y. and Jia, Y., 'Probabilistic Failure Mode: of CNC Lathes,' Reliability Engineering and System Safety, Vol. 65, No.3, pp. 307-314,1999   DOI   ScienceOn
4 Korean Standard Association, 'Distribution and Statistics of Reliability,' 1992
5 Lee, S. W., Song, J. Y, Hwang, J. H. and Park, H. Y, 'Quality Function Deployment of Core Units for a Reliability Evaluation of Machine Tools,' Proceeding of KSPE Spring Conference, pp. 59-62,2001
6 Kim, D. G, Kim, J. W. and lung, S. B., 'Evaluation of Solder Joint Reliability in Flip Chip Package under Thermal Shock Test,' Thin Solid Films, Vol. 504, No. 1-2, pp. 426-430, 2006   DOI
7 Reliability Analysis Center, 'NPRD95 (Non-electric Parts Reliability Data 95),' 1995
8 Kim, B. S., Kim, J. S., Lee, S. H., Song, J. Y. and Lee, S. W., 'A Study on Failure Mode Analysis of Machining Centers,' Journal of the KSPE, Vol. 18, No.1, pp. 74-79, 2001
9 Kim, B. S., Lee, S. H., Song, J. Y. and Lee, S. W., 'Reliability Assessment of Machine Tools Using a Failure Mode Analysis Program,' Journal of KSMTE, Vol. 14, No.1, pp. 15-23,2005
10 Moa Soft, 'A Guide Book for Reliability Prediction,' Kyowoosa, pp. 351-365,2002