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Uncertainty associated with form assessmentin coordinate metrology

Published online by Cambridge University Press:  05 June 2013

A.B. Forbes
A.B. Forbes*
Affiliation:
National Physical Laboratory, Teddington, Middlesex, UK
*
⋆ Correspondence: Alistair.Forbes@npl.co.uk
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Abstract

In this paper, we describe techniques for evaluating the uncertainties associated with the assessment of form error, i.e., the departure from ideal geometry of a manufactured part, in coordinate metrology. The techniques take into account measurement uncertainty, sampling effects due to the fact that the form error is determined from a finite set of coordinate data points, and the spatial correlation of the form errors. The techniques are designed to be practical, without the need for complex computation.

Keywords

Form errorGaussian processesuncertainty
Type
Research Article
Information
International Journal of Metrology and Quality Engineering , Volume 4 , Issue 1 , 2013 , pp. 17 - 22
Copyright
© EDP Sciences 2013

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