3D artefact for concurrent scale calibration in Computed Tomography. Issue 1 (2016)

• Record Type: Journal Article
• Authors: Stolfi, A.; De Chiffre, L.
• Is Part Of: CIRP annals. Volume 65:Issue 1(2016)
• Page Start: 499
• Page End: 502
• Publication Date: 2016
• Subjects: Metrology -- Calibration -- Computed Tomography (CT); Production engineering -- Research -- Periodicals; 670.5
• DOI: 10.1016/j.cirp.2016.04.069
• Languages: English
• ISSNs: 0007-8506

Abstract

Abstract: A novel artefact for calibration of the scale in 3D X-ray Computed Tomography (CT) is presented. The artefact comprises a carbon fibre tubular structure on which a number of reference ruby spheres are glued. The artefact is positioned and scanned together with the workpiece inside the CT scanner providing a reference system for measurement. The artefact allows a considerable reduction of time by compressing the full process of calibration, scanning, measurement, and re-calibration, into a single process. The method allows a considerable reduction of the amount of data generated from CT scanning. A prototype was calibrated and its applicability demonstrated.