Estimating dynamic mechanical quantities and their associated uncertainties: application guidance
It addresses the need for practical guidance for industrial end users on applying dynamic calibration information from National Measurement Institutes.
This paper provides practical guidance for end users on how to use dynamic calibration information for mechanical quantities (force, torque, pressure) by presenting methods for uncertainty evaluation in dynamic measurements, embodied in publicly-available software. The methods aim to yield more reliable estimates of measurands and their uncertainties.
Recently several European National Measurement Institutes have established traceable calibration methods for dynamic mechanical quantities, e.g., dynamic force, torque and pressure. However, the use in industry and elsewhere of dynamic calibration information provided on certificates is not straightforward. Typically it is necessary to employ deconvolution techniques to obtain estimates of measurands, and the deconvolution method itself and the associated algorithms are sources of uncertainty that must be included in uncertainty budgets. There is a need for practical guidance for end users on how to use the newly-available dynamic calibration information. To this end we set out an approach to the evaluation of uncertainties associated with dynamic measurements that we believe covers the most relevant cases. The methods have been embodied in publicly-available software and we show how they can be used to tackle some example problems. We believe that the methods lead to more reliable estimates of the relevant measurands and their associated uncertainties.