UNCERTAINTY EVALUATION IN SMALL ANGLE CALIBRATION USING ISO GUM APPROACH AND MONTE CARLO METHOD

Antonio Piratelli-Filho, Benedito Di Giacomo

Abstract

This work investigates the determination of measurement uncertainty in calibration of small angle measurement instruments. After attentive study of the sources of variation, an expression was developed to determine the measurement uncertainty. Two approaches were used to determine the measurement uncertainty: ISO GUM and Monte Carlo simulation method. An example is presented and the calibration of an Electronic level was carried out using a sine table at the Metrology Laboratory, in the University of Brasília, Brazil. The expanded uncertainty results showed good agreement of both techniques and Monte Carlo method proved to simplify analysis when uncertainty involves expressions with some degree of complexity.

Keywords

uncertainty, Monte Carlo method, small angle

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PWC-2003-TC8-003.pdf

DOI

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IMEKO TC

TC8 - Traceability in Metrology

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