Authors: Marc Priel
Publish Date: 2009/04/11
Volume: 14, Issue: 5, Pages: 235-241
Abstract
Since the advent of the Guide to the expression of Uncertainty in Measurement GUM in 1995 laying the principles of uncertainty evaluation numerous projects have been carried out to develop alternative practical methods that are easier to implement namely when it is impossible to model the measurement process for technical or economical aspects In this paper the author presents the recent evolution of measurement uncertainty evaluation methods The evaluation of measurement uncertainty can be presented according to two axes based on intralaboratory and interlaboratory approaches The intralaboratory approach includes “the modelling approach” application of the procedure described in section 8 of the GUM known as GUM uncertainty framework and “the single laboratory validation approach” The interlaboratory approaches are based on collaborative studies and they are respectively named “interlaboratory validation approach” and “proficiency testing approach”
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