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Author: william estler

Displaying records 21 to 30 of 37 records.
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21. A Constrained Monte Carlo Simulation Method for the Calculation of CMM Measurement Uncertainty
Published: 1/1/1999
Authors: Steven David Phillips, Bruce R. Borchardt, Daniel S Sawyer, William Tyler Estler, K Eberhardt, M Levenson, Marjorie A McClain, Ted Hopp
Abstract: We describe a Monte Carlo simulation technique where known information about a metrology system is employed as a constraint to distinguish the errors associated with the instrument under consideration from the set of all possible instrument errors. T ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820941

22. Measurement Uncertainty and Uncorrected Bias
Published: 1/1/1999
Authors: Steven David Phillips, K Eberhardt, William Tyler Estler
Abstract: This paper discusses the distinction between measurement uncertainty, measurement errors and their role in the calibration process. The issue of including uncorrected bias is addressed and a method to extend the current ISO Guide to the Expression of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820942

23. Calculation of Measurement Uncertainty Using Prior Information
Published: 11/1/1998
Authors: Steven David Phillips, William Tyler Estler
Abstract: We describe the use of Bayesian inference to include prior information about the value of the measurand in the calculation of measurement uncertainty. Typical examples show this can, in effect, reduce the expanded uncertainty by up to 85 %. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820904

24. The Estimation of Measurement Uncertainty of Small Circular Features Measured by Coordinate Measuring Machines
Published: 4/1/1998
Authors: Steven David Phillips, Bruce R. Borchardt, William Tyler Estler, J Buttress
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 samp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820903

25. Uncertainty Analysis for Angle Calibrations Using Circle Closure
Series: Journal of Research (NIST JRES)
Published: 3/1/1998
Author: William Tyler Estler
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823098

26. Uncertainty Analysis for Angle Calibrations Using Circle Closure
Published: 3/1/1998
Author: William Tyler Estler
Abstract: We analyze two types of full-circle angle calibrations: a simple closure in which a single set of unknown angular segments is sequentially compared with an unknown reference angle, and a dual closure in which two divided circles are simultaneously ca ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820892

27. In memoriam R.V. Jones (1911-1917)
Published: 1/1/1998
Authors: Christopher J. Evans, William Tyler Estler
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820112

28. A Distribution-Independent Bound on the Level of Confidence in the Result of a Measurement
Published: 9/1/1997
Author: William Tyler Estler
Abstract: The Bienaym?-Chebyshev Inequality provides a quantitative bound on the level of confidence of a measurement with known combined standard uncertainty and assumed coverage factor. The result is independent of the detailed nature of the probability dist ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820841

29. Uncertainty Estimation for Multiposition Form Error Metrology
Published: 9/1/1997
Authors: William Tyler Estler, Christopher J. Evans, Lianzhen Shao
Abstract: We analyze a general multiposition comparator measurement procedure that leads to partial removal of artifact error for a class of problems including roundness metrology, measurement of radial error motions of precision spindles, and figure error met ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820842

30. Practical Aspects of Touch Trigger Probe Error Compensation
Published: 7/1/1997
Authors: William Tyler Estler, Steven David Phillips, Bruce R. Borchardt, Ted Hopp, M Levenson, K Eberhardt, Marjorie A McClain
Abstract: We present extensions of our prior work in modeling and correcting for pretravel variation errors in kinematic seat touch-trigger coordinate measuring machine (CMM) probes with straight styli. A simple correction term is shown to account for a range ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820843



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