대한안전경영과학회지 (Journal of the Korea Safety Management & Science)

  • 제12권1호
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  • Pages.199-205
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  • 2010
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  • 1229-6783(pISSN)
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  • 2288-1484(eISSN)
대한안전경영과학회 (Korea Safety Management & Science)
권호 표지

측정 ANOVA의 분산성분에 의한 게이지 R&R 추정

Estimation of Gauge R&R by Variance Components of Measurement ANOVA

  • 투고 : 2009.09.30
  • 심사 : 2009.12.04
  • 발행 : 2010.03.31
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초록

The research proposes the three-factor random measurement models for estimating the precision about operator, part, tool, and various measurement environments. The combined model with crossed and nested factors is developed to analyze the approximate F test by degrees of freedom given by Satterthwaite and point estimation of precisions from expected mean square. The model developed in this paper can be extended to the three useful models according to the type of nested designs. The study also provides the three-step procedures to evaluate the measurement precisions using three indexes such as SNR(Signal-To-Noise Ratio), R&R TR(Reproducibility&Repeatability-To-Total Precision Ratio), and PTR(Precision-To-Tolerance Ratio), The procedures include the identification of resolution, the improvement of R&R reduction, and the evaluation of precision effect.

키워드

참고문헌

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