Earticle

초록

영어

We propose, a new process capability index Cpik (WV) applying the weighted variance control charting method for non-normally distributed. The main idea of the weighted variance method(WVM) is to divide a skewed or asymmetric distribution into two normal distributions from its mean to create two new distributions which have the same mean but different standard deviations. In this paper we propose an example, a distributions generated from the Johnson family of distributions, to demonstrate how the weighted variance-based process capability indices perform in comparison with another two non-normal methods, namely the Clements and the Wright methods. This example shows that the weighted valiance-based indices are more consistent than the other two methods in terms of sensitivity to departure to the process mean/median from the target value for non-normal processes. Second method show using the percentage nonconforming by the Pearson, Johnson and Burr systems. This example shows a little difference between the Pearson system and Burr system, but Johnson system underestimated than the two systems for process capability.

목차

Abstract
 1. 서론
 2. 정규공정에 대한 공정능력의 측도
  2.1 정규공정의 공정능력지수
  2.2 정규공정의 불량률의 측도
 3. 비정규공정에 대한 공정능력의 측도
  3.1 공정능력지수의 측도
  3.2 불량률의 측도
 4. 수치 예제
  4.1 공정능력지수의 추정 절차
  4.2 불량률 추정 절차
  4.3 공정능력의 평가
 5. 결론
 6. 참고문헌

저자

• 김진수 [ Kim, Jin - Soo | 한밭대학교 산업경영공학과 ]
• 김홍준 [ Kim, Hong - Jun | 대구산업정보대학 산업안전보건과 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한안전경영과학회지 [Journal of Korea Safety Management & Science]

• 간기

  계간

• pISSN

  1229-6783

• eISSN

  2288-1484

• 수록기간

  1999~2025

• 십진분류

  KDC 530 DDC 620