Phillips, S.
, Borchardt, B.
and Estler, W.
(1995),
The Estimation of Measurement Uncertainty of Small Circular Features Measured by CMMs, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD
(Accessed April 19, 2024)
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The Estimation of Measurement Uncertainty of Small Circular Features Measured by CMMs
Published
Author(s)
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Abstract
This paper examines the measurement uncertainty of small circular features as a function of the sampling strategy, i.e., the number and distribution of measurement points. Specifically, we examine measuring a circular feature using a three-point sampling strategy in which the angular distance between the points varies from widely spaces, 120 degrees, to closely grouped, a few degrees. Both theoretical and experimental results show that the measurement uncertainty is a strong function of the sampling strategy. The uncertainty is shown to vary by four orders of magnitude as a function of the angular distribution of the measurement points. A conceptual framework for theoretically estimating the measuring uncertainty is described and a good agreement with experiment is obtained when the measurements are consistent with the assumptions of the theoretical model.Citation
NIST Interagency/Internal Report (NISTIR) - 5698
Report Number
5698
NIST Pub Series
Pub Type
NIST Pubs
Citation
Created February 1, 1995, Updated February 19, 2017