ISSN : 1229-6783(Print)
ISSN : 2288-1484(Online)
ISSN : 2288-1484(Online)
미세변동공정관리를 위한 가속수명시험관리도 설계
Design of ALT Control Chart for Small Process Variation
Abstract
In the manufacturing process the most widely used ￣X chart has been applied to control the process mean.Also, Accelerated Life Test(ALT) is commonly used for efficient assurance of product life in developmentphases, which can be applied in production reliability acceptance test. When life data has lognormal distribution,through censored ALT design so that censored ALT data has asymptotic normal distribution, ALT￣X controlchart integrating ￣X chart and ALT procedure could be applied to control the mean of process in themanufacturing process. In the situation that process variation is controlled, Zp control chart is an effectivemethod for the very small fraction nonconforming of quality characteristic. A simultaneous control scheme with ALT￣X control chart and Zp control chart is designed for the very small fraction nonconforming of productlifetime.
SPC(Statistical Process Control),ALT(Accelerated life test),Fraction of nonconforming,Production reliability acceptance test
- 20 엄상준(167-174).pdf522.7KB
Reference
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14. Nelson and B. Wayne, Applied life data analysis, John Wiley & Sons, 2003
15. Z. Wu, S. H. Yeo and T. A. Spedding, "A Synthetic Control Chart for Detecting Fraction Nonconforming Increases," Journal of Quality Technology, Vol.33, pp104-111, 2001
2. Bai, Kim and Chun, "Design of Failure-Censored Accelerated Life-Test Sampling Plans for Lognormal and Weibull Distribution," Engineering Optimization, Vol.21, pp197-212, 1993
3. F. F. Gan, "Design of Optimal Exponential CUSUM Control Chart," Journal of Quality Technology, Vol.26(2), pp109-124, 1994
4. Harry, "Confidence Intervals for the Percent Nonconforming Based on Variables Data," Journal of Quality Technology, Vol.14(4), pp207-210, 1982
5. D. S. Holmes and A. E. Mergen, "EWMA Acceptance Chart," Quality and Reliability Engineering International, Vol.16(2), pp1-4, 2000
6. B. C. Khoo, "A Moving Average Control Chart for Monitoring the Fraction Non-conforming," Quality and Reliability Engineering International, Vol.20, pp617-635, 2004
7. J. G. Kim, Design of Accelerated Life Test Sampling Plans for Lognormal and Weibull Distributions, Korea Advanced Institute of Science and Technology, 1993
8. J. G. Kim, "Design of a Process Reliability Assurance System based on Accelerated Tests," The Journal of Reliability Engineering Association of Japan, Vol.23(7), pp257-260, 2001
9. J. M. Lucas, "Combined Shewhart-CUSUM Quality Control Schemes," Journal of Quality Technology, Vol.14(2), pp51-59, 1982
10. J. M. Lucas, "Counted Data CUSUM's," Technometrics, Vol.27(3), pp129-144, 1985
11. J. I. McCool and T. A. Joyner-Motley, "Control Charts Applicable When the Fraction Nonconforming is Small," Journal of Quality Technology, Vol.30(3), pp240-247, 1998
12. D. C. Montgomery, Introduction to Statistical Quality Control, John Wiley & Sons, NewYork, 2008
13. L. S. Nelson, "A Control Chart for Parts-per-Million Nonconforming Items," Journal of Quality Technology, Vol.26(3), pp239-240, 1994
14. Nelson and B. Wayne, Applied life data analysis, John Wiley & Sons, 2003
15. Z. Wu, S. H. Yeo and T. A. Spedding, "A Synthetic Control Chart for Detecting Fraction Nonconforming Increases," Journal of Quality Technology, Vol.33, pp104-111, 2001
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