Accuracy of industrial computed tomography measurements: Experimental results from an international comparison – S. Carmignato

X Ray CT/4

Abstract

X-ray computed tomography (CT) is increasingly used in industry for dimensional quality control
purposes. However, due to numerous and complex error sources and to the current lack of
standardization, industrial users are facing difficulties in the evaluation of CT measurements uncertainty
and metrological performance of CT systems. This paper analyses the state of the art in industrial CT
metrology, with focus on accuracy and traceability issues, by examining specific results obtained from the
first international intercomparison of CT systems for dimensional metrology. The intercomparison
involved 15 CT systems operated by expert users in Europe, America and Asia.