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An Empirical Investigation into the Distribution of Flatness Measurements

Summary: [This abstract is based on the authors' abstract.]To ensure high yield in the manufacture of compact, small assemblies, the flatness of individual components is strictly toleranced and controlled. Twenty industrial flatness data sets from four separate processes and three different materials are examined. The Moran log spacing statistic is used to determine if the normal distribution provides an adequate fit. Results demonstrate an adequate fit for all the data sets, validating the use of root-mean-square tolerance analysis techniques.

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  • Topics:
  • Keywords: Goodness of fit,Measurement and control,Normal distribution,Tolerance
  • Author: Berrado, A.; Hubele, N.F.; Gel, E.S.
  • Journal: Quality Engineering