DOI QR코드

DOI QR Code

Issues on the Calculation of the Process Capability Index

공정능력지수 산정에 있어 고려사항

  • Lee, Do-Kyung (School of Industrial Engineering, Kumoh National Institute of Technology)
  • 이도경 (금오공과대학교 산업공학부)
  • Received : 2014.02.17
  • Accepted : 2014.03.10
  • Published : 2014.03.31

Abstract

This study is concerned with process capability index in single process. We enumerated issues on the calculation of process capability index and described the effects of these issues. We explained the development process and the reason of the representative existing process capability indices. We investigated whether the indices agree with the concept of process capability and drew the problems from those results. In addition, we proposed alternative and direction to seize the process capability necessary to the field.

Keywords

References

  1. Baik, J.W. and Jo, J., Criticism and Guideline for the Use of Process Capability Index. Journal of the Korean Society for Quality Management, 1999, Vol. 27, No. 2, p 81-100.
  2. Benson, E.D., Statistical Properties of a System of Fourth-Generation Process Capability Indices Cpsk(u, v, w). Dissertation, University of Maryland, 1994.
  3. Boyles, R.A., The Taguchi Capability Index. Journal of Quality Technology, 1991, Vol. 23, No. 1, p 17-26. https://doi.org/10.1080/00224065.1991.11979279
  4. Chan, L.K., Cheng, S.W., and Spring, F.A., A New Measure of Process Capability. Journal of Quality Technology, 1988, Vol. 20, p 162-175. https://doi.org/10.1080/00224065.1988.11979102
  5. Clements, J.A., Process Capability Calculation for Non-Normal Distribution. Quality of Progress, 1989, Vol. 22, p 98-100.
  6. Gunter, B.H., The use and abuse of Cpk. Quality of Progress, 1989, Vol. 8, No. 1, p 72-73.
  7. Jang, Y.S. and Bai, D.S., Process Capability Indices for Skewed Population. Korean Institute of Industrial Engineering, 2000, Spring Conference, p 365-368.
  8. Juran, J.M., Quality Control Handbook, 3rd Ed. Mcgraw-hill, New York, 1974.
  9. Kane, V.E., Process Capability Indices. Journal of Quality Technology, 1986, Vol. 18, No 1, p 41-52. https://doi.org/10.1080/00224065.1986.11978984
  10. Kenney, J.F. and Keeping, E.S., The Distribution in Mathematics of Statistics, 2nd ed, Princeton, NJ : Van Nostrand, 1951, p 170-173.
  11. Kotz, S. and Johnson, N.L., Process Capability Indices. Champion and Hall, 1993.
  12. Kotz, S. and Johnson, N.L., Process Capability Indices - A Review 1999-2000. Journal of Quality Technology, 2002, Vol. 34, No. 1, p 2-19. https://doi.org/10.1080/00224065.2002.11980119
  13. Kotz, S. and Lovelace, C.R., Introduction to Process Capability Indices. Arnold, London, U.K. : 1998.
  14. Lee, D.K. and Lee, H.S., Process capability index for single process with multiple measurement location. Journal of the Society of Korea Industrial and Systems Engineering, 2007, Vol. 30, No. 3, p 28-36.
  15. Lee, D.K., A Study on the Expression of Process Capability and Sigma Level. Journal of the Society of Korea Industrial and Systems Engineering, 2009, Vol. 30, No. 3, p 28-36.
  16. Patnaic, P.B., The Use of Mean Range as an Estimator of Variance in Statistical Test. Biometrica, 1950, Vol. 37, No. 1, p 78-87. https://doi.org/10.1093/biomet/37.1-2.78
  17. Pearn, W.L., Kotz, S., and Johnson, N.L., Distributional and Inferential Properties of Process Capability Indices. Journal of Quality Technology, 1992, Vol. 24, No. 4, p 216-231. https://doi.org/10.1080/00224065.1992.11979403
  18. Pyzedek, T., How Do I Compute sigma? Let Me Count The Ways. Quality Digest, 1998, May.
  19. Pyzedek, T., Why normal distributions aren't-All that normal. Quality Engineering, 1995, Vol. 7, p 769-777. https://doi.org/10.1080/08982119508918823
  20. Quesenberry, C.P., The Effect of Sample Size on Estimated Limits for and X bar control Charts. Journal of Quality Technology, 1993, Vol. 25, p 237-247. https://doi.org/10.1080/00224065.1993.11979470
  21. Sommervile, S.E. and Montgomery, D.C., Process Capability Indices and non-normal distributions. Quality Engineering, 1996, Vol. 9, p 305-316. https://doi.org/10.1080/08982119608919047
  22. Yang, K. and Hancock, W.M., Statistical Quality Control for Correlated Samples. International Journal Production Research, 1990, Vol. 28, p 595-608. https://doi.org/10.1080/00207549008942738

Cited by

  1. 다측정 공정능력지수의 특성분석 vol.39, pp.1, 2016, https://doi.org/10.11627/jkise.2016.39.1.091