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Evaluating Measurement Systems and Manufacturing Processes Using Three Quality Measures

Summary: [This abstract is based on the authors' abstract.] Manufacturers and suppliers use quantitative quality measures to make objective decisions regarding product and process quality. Many use the precision-to-tolerance ratio to approve a measurement system, or use one or more measures of process capability to approve a manufacturing process. A measure used to assess the ability for two parties to communicate via dimension data is the correlation in repeat measurements. With the addition of a measure of process capability, a relationship between the three measures indicates a method for determining an acceptable level for the correlation criterion. This approach of plotting the quality measurement criteria defines the quality situation and facilitates improvement suggestions.

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  • Topics: Quality Tools, Product Development and Recall
  • Keywords: Correlation, Measurement error, Quality tools, Product quality, Precision
  • Author: Majeske, Karl D. (kdm@umich.edu); Andrews, Richard W.
  • Journal: Quality Engineering