Convergence Behaviour of Numerical Measurement Uncertainty Evaluation using a Virtual Metrological Computed Tomography System

Abstract

Digital twins of measurement devices offer fascinating applications, e.g. systematic error correction [12] or numerical uncertainty evaluation according to GUM Supplement 1 [5]. The latter is state of the art for tactile coordinate measurements [3]. For Computed Tomography (CT), this is currently not the case [18]. Prior work at the Institute of Manufacturing Metrology showed the potential to numerically evaluate task-specific measurement uncertainties in good agreement with values determined experimentally in accordance with the VDI/VDE standard 2630 Part 2.1 [18] for an unproblematic measurement task (see [8]). Details on the digital twin and the Monte Carlo method used can be found in [19]. In this prior work, the number of simulations for the Monte Carlo trials was chosen based on computational feasibility and expert knowledge. A systematic study of the convergence behaviour is the object of this contribution. Other contributions towards the numerical evaluation of task-specific measurement uncertainties can be found in [9, 15].