Measurement uncertainty in surface flatness measurement

Details Measurement uncertainty in surface flatness measurement Measurement uncertainty in surface flatness measurement

2011-11-29

arxiv.org/abs/1111.6758v1

Physics

General Physics

5th national metrology conference, Hanoi, Vietnam, 2010

Scientific paper

Flatness of a plate is a parameter has been put under consideration for long time. Factors influencing the accuracy of this parameter have been recognized and examined carefully but placed scatterringly. Beside that those reports have not been always in harmonization with Guide for expression of uncertainty measurement (GUM). Furthermore, mathematical equations describing clearly the flatness measurement have not been seen in those reports also. We have collected those influencing factors for systematic reference purpose, re-written the equation describing the profile measurement of the plate topography, and proposed an equation for flatness determination. An illustrative numerical example will be also shown.

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