Uncertainty estimation of 2.5-D roughness parameters obtained by mechanical probing
by H. Haitjema
International Journal of Precision Technology (IJPTECH), Vol. 3, No. 4, 2013

Abstract: With the definition and further standardisation of 2.5-D roughness measuring methods and parameters, the demand of traceability and uncertainty estimation for all these parameters automatically becomes eminent. In this paper, it is shown that for every roughness parameter there are instrument calibration factors that directly influence the uncertainty. However, there are also factors that determine the parameter values - and their uncertainty - in an indirect way. The latter factors are most difficult to estimate, as these are dependent on the workpiece under test (i.e., task-specific). We will show that with computer simulation methods, it is, in general, possible to obtain reliable uncertainty estimates.

Online publication date: Wed, 11-Dec-2013

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