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Evaluating CT for Metrology: The Influence of Material Thickness on Measurements



Joseph Schlecht, Eric Ferley, Shaun COUGHLIN , Steven D. Phillips, Vincent Lee, Craig M. Shakarji


X-ray imaging provides a non-destructive means to measure internal features of a workpiece, and CT offers unique capabilities for internal measurements in 3-D. However, due to the computational nature of CT and its indirect measurement process, assessing its efficacy for dimensional metrology is essential. CT reconstruction artefacts are of primary concern as they may influence measurements. In this paper we investigate the effect of varying material thickness on CT reconstructions for metrology. We show that applying several thicknesses of material does not present significant issues for CT-based metrology. The results advocate further exploration of CT as a means for internal workpiece measurement and metrology.
Conference Dates
October 6-10, 2014
Conference Location
Prague, AL, CZ
Conference Title
11th European Conference on Non-Destructive Testing


Computed tomography (CT), metrology, CT reconstruction artefacts, material thickness


Schlecht, J. , Ferley, E. , COUGHLIN, S. , Phillips, S. , Lee, V. and Shakarji, C. (2014), Evaluating CT for Metrology: The Influence of Material Thickness on Measurements, 11th European Conference on Non-Destructive Testing, Prague, AL, CZ, [online], (Accessed May 28, 2024)


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Created October 6, 2014, Updated October 12, 2021