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Variable Gauge Repeatability and Reproducibility Study Using the Analysis of Variance Method

Summary: [This abstract is based on the author's abstract.]

A gauge repeatability and reproducibility (R&R) study is presented. It uses the analysis of variance method. Part variation is not considered for gauge R&R analysis. Operator, part, and replicates represent the two-way experimental design model. The analysis of variance method is used to obtain variances for standard deviations for determining the gauge R&R. A ratio of 5.15 total standard deviations (or 99 percent of gauge R&R) to part tolerance range is used as a gauge capability index to assess gauge performance. An example of an actual gauge R&R study is provided.

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  • Topics: Design of Experiments
  • Keywords: Gauges, Repeatability and reproducibility studies (R&R), Standard deviation, Analysis of variance (ANOVA), Design of experiments (DOE), Gage Repeatability and reproducibility studies (GR&R)
  • Author: Tsai, Pingfang
  • Journal: Quality Engineering