Angel, J.

De Chiffre, Leonardo

Stolfi, Alessandro

Computed Tomography (CT) is a promising technology for both geometrical measurements and form measurements. However, a number of influence factors such as magnification, threshold determination strategies, and position of feature in the CT volume, have effect on the CT measurement performance. The present investigation concerns the measurement of flatness at different positions in the CT measurement volume using a milled miniature step gauge. The artifact is a 42 mm long step gauge with 11 grooves at 2 mm steps, made of polyphenylene sulphide PPS (? = 1.650 g/cm&lt;sup&gt;3&lt;/sup&gt;), with limited form error and good surface finish. A total of 132 flatness measurements were performed on the left step gauge grooves. The linear distribution of the grooves pointed out a non-uniform CT performance over the step gauge length with max deviation up to 25 μm. However, an appropriate choice of parameters yielded a reduction of the max deviation along the step gauge length by approximately 13 μm

Online Research Database In Technology

Form measurements in an industrial CT scanner investigated using a polymer step gauge -DTU Orbit (08/11/2017) Form measurements in an industrial CT scanner investigated using a polymer step gaugeComputed Tomography (CT) is a promising technology for both geometrical measurements and form measurements.However, a number of influence factors such as magnification, threshold determination strategies, and position of featurein the CT volume, have effect on the CT measurement performance. The present investigation concerns the measurementof flatness at different positions in the CT measurement volume using a milled miniature step gauge. The artifact is a 42mm long step gauge with 11 grooves at 2 mm steps, made of polyphenylene sulphide PPS (? = 1.650g/cm<sup>3</sup>), with limited form error and good surface finish. A total of 132 flatness measurements were performedon the left step gauge grooves. The linear distribution of the grooves pointed out a non-uniform CT performance over thestep gauge length with max deviation up to 25 μm. However, an appropriate choice of parameters yielded a reduction ofthe max deviation along the step gauge length by approximately 13 μm. General informationState: PublishedOrganisations: Department of Mechanical Engineering, Manufacturing Engineering, Sonion A/SAuthors: Angel, J. (Ekstern), Stolfi, A. (Intern), De Chiffre, L. (Intern)Pages: 203-204Publication date: 2015 Host publication informationTitle of host publication: Proceedings of the 15th International Conference of the European Society for PrecisionEngineering and NanotechnologyPublisher: The European Society for Precision Engineering and NanotechnologyISBN (Print): 9780956679079Main Research Area: Technical/natural sciencesConference: 15th euspen International Conference & Exhibition (2015), Leuven, Belgium, 01/06/2015 - 01/06/2015Publication: Research - peer-review › Article in proceedings – Annual report year: 2015 

Form measurements in an industrial CT scanner investigated using a polymer step gauge

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Form measurements in an industrial CT scanner investigated using a polymer step gauge

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Online Research Database In Technology