생산량과 공정분산이 변하는 공정평균이동 문제의 마모한계 결정

• 영문명: Determination of the Wear Limit to the Process Mean Shift Problem with Varying Product and Process Variance
• 발행기관: 한국산업경영시스템학회
• 저자명: 이도경(Do-Kyung Lee)
• 간행물 정보: 『산업경영시스템학회지』제43권 제3호, 95~100쪽, 전체 6쪽
• 주제분류: 공학 > 산업공학
• 파일형태: PDF
• 발행일자: 2020.09.30

영문 초록

Machines and facilities are physically or chemically degenerated by continuous usage. One of the results of this degeneration is the process mean shift. The representative type of the degeneration is wear of tool or machine. According to the increasing wear level, non-conforming products cost and quality loss cost are increasing simultaneously. Therefore a periodic preventive resetting the process is necessary. The total cost consists of three items: adjustment cost (or replacement cost), non-conforming cost due to product out of upper or lower limit specification, and quality loss cost due to difference from the process target value and the product characteristic value among the conforming products. In this case, the problem of determining the adjustment period or wear limit that minimizes the total cost is called the ‘process mean shift’ problem. It is assumed that both specifications are set and the wear level can be observed directly . In this study, we propose a new model integrating the quality loss cost, process variance, and production volume, which has been conducted in different fields in previous studies. In particular, for the change in production volume according to the increasing in wear level, we propose a generalized production quantity function g(w). This function can be applied to most processes and we fitted the g(w) to the model. The objective equation of this model is the total cost per unit wear, and the determining variables are the wear limit and initial process setting position that minimize the objective equation.

목차

1. 서 론

2. 기존 연구

3. 모형의 구성

4. 결 론

References

키워드

Process Mean Shift Process Variance Production Quantity Quality Loss Function