Additively manufactured parts are characterized by metrological challenges and complexities, due to several reasons, including the inherent presence of internal defects and complex surface topography. Micro X-ray computed tomography is currently used to perform dimensional evaluations, porosity analysis and, more recently, surface topography measurements of additively manufactured parts thanks to the possibility of analysing non-destructively also non-accessible geometries and micro-scale features. However, the accuracy of these evaluations can be limited due to the high complexity of such parts. This work summarizes the results of experimental investigations on metrological challenges and accuracy of tomographic analyses, based on studies performed on Ti6Al4V specimens produced via selective laser melting.

X-ray computed tomography for metal additive manufacturing: Challenges and solutions for accuracy enhancement

Zanini, Filippo;Sbettega, Elia;Carmignato, Simone
2018

Abstract

Additively manufactured parts are characterized by metrological challenges and complexities, due to several reasons, including the inherent presence of internal defects and complex surface topography. Micro X-ray computed tomography is currently used to perform dimensional evaluations, porosity analysis and, more recently, surface topography measurements of additively manufactured parts thanks to the possibility of analysing non-destructively also non-accessible geometries and micro-scale features. However, the accuracy of these evaluations can be limited due to the high complexity of such parts. This work summarizes the results of experimental investigations on metrological challenges and accuracy of tomographic analyses, based on studies performed on Ti6Al4V specimens produced via selective laser melting.
2018
Procedia CIRP
15th CIRP Conference on Computer Aided Tolerancing, CIRP CAT 2018
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3291755
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