Int. J. Metrol. Qual. Eng.
Volume 4, Number 1, 2013
|Page(s)||17 - 22|
|Published online||05 June 2013|
Uncertainty associated with form assessment in coordinate metrology
National Physical Laboratory, Teddington, Middlesex, UK
⋆ Correspondence: Alistair.Forbes@npl.co.uk
Received: 12 November 2012
Accepted: 22 November 2012
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.
Key words: Form error / Gaussian processes / uncertainty
© EDP Sciences 2013
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