engleski

TO WHAT EXTENT IS IT NECESSARY TO REVISE THE CURRENT GUIDELINES FOR EVALUATING MEASUREMENT UNCERTAINTY?

In order to ensure a harmonized approach to estimating measurement uncertainty, twenty-five years ago the Guide to the Expression of Uncertainty in Measurement (GUM) has established general rules for calculating and reporting measurement uncertainty. In recent years there has been a strong development of modern metrology such as dynamic measurements, spectroscopy, nanometrology, computed tomography, network sensors etc. Input quantities become more and more complex and dependent on other quantities, leading to complex functional relationships that can not always be explicitly expressed. In such cases the application of the GUM method can lead to unacceptable results, so other analytical or numerical methods are required. Till today, the Joint Committee for Guidance on Metrology has issued four amendments to the Guide, and three more proposals for revising the Guide are being prepared. Various documents exist in different approaches to estimation of measurement uncertainty. In order to overcome these problems it is necessary to develop contemporary models for estimating measurement uncertainty in order to achieve the harmonized application and implementation of the measurement uncertainty principle and to make reliable decisions about the conformity assessment with specifications.

measurement uncertainty, methods for measurement uncertainty evaluation, modern metrology

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