Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-29T03:30:19.819Z Has data issue: false hasContentIssue false
  • English
  • Français

A study on evaluation strategies in dimensional X-ray computedtomography by estimation of measurement uncertainties

Published online by Cambridge University Press:  14 November 2012

P. Müller ,
J. Hiller ,
A. Cantatore  and
L. De Chiffre
Get access

Abstract

Computed tomography has entered the industrial world in 1980’s as a technique fornon-destructive testing and has nowadays become a revolutionary tool for dimensionalmetrology, suitable for actual/nominal comparison and verification of geometrical anddimensional tolerances. This paper evaluates measurement results using different measuringstrategies applied in different inspection software packages for volume and surface dataanalysis. The strategy influence is determined by calculating the measurement uncertainty.This investigation includes measurements of two industrial items, an aluminium pipeconnector and a plastic toggle, a hearing aid component. These are measured using acommercial CT scanner. Traceability is transferred using tactile and optical coordinatemeasuring machines, which are used to produce reference measurements. Results show thatmeasurements of diameter for both parts resulted in smaller systematic errors compared todistance and height measurements. It was found that uncertainties of all measurandsevaluated on surface data were generally greater compared to measurements performed onvolume data.

Keywords

Computed tomographyevaluation strategydimensional metrologymeasurement uncertainty
Type
Research Article
Information
International Journal of Metrology and Quality Engineering , Volume 3 , Issue 2 , 2012 , pp. 107 - 115
Copyright
© EDP Sciences 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Kruth, J.-P., Bartscher, M., Carmignato, S., Schmitt, R., De Chiffre, L., Weckenmann, A., Computed tomography for dimensional metrology, CIRP Ann. Manuf. Technol. 60, 821–842 (2011) CrossRefGoogle Scholar
Bauer, W., Bessler, F.T., Zabler, E., Bergmann, R.B., Computer tomography for nondestructive testing in the automotive industry, Developments in X-ray Tomography IV, edited by U. Bonse, Proc. SPIE 5535, 464–472 (2004) CrossRefGoogle Scholar
P. Müller, R.A. Pacurar, L. De Chiffre, A. Cantatore, P. Berce, Geometrical metrology on silicone rubber by computed tomography, Proceedings of 11th Euspen International Conference, Como, Italy, 2011, pp. 243–246
Kasperl, S., Hiller, J., Krumm, M., Computed tomography metrology in industrial research and development, MP Mater. Test. 51, 405–411 (2009) CrossRefGoogle Scholar
Krumm, M., Kasperl, S., Franz, M., Reducing non-linear artifacts of multi-material objects in industrial 3D computed tomography, NDT & E Int. 41, 242–251 (2008) CrossRefGoogle Scholar
A. Weckenmann, P. Krämer, Predetermination of measurement uncertainty in the application of computed tomography, 11th CIRP International Conference on Computer Aided Tolerancing (CAT), Annecy, France, 2009, pp. 317–330
F. Welkenhuyzen, K. Kiekens, M. Pierlet, W. Dewulf, P. Bleys, J.-P. Kruth, A. Voet, Industrial Computer Tomography for Dimensional Metrology : Overview of Influence Factors and Improvement Strategies, 4th International Conference on Optical Measurement Techniques for Structures and Systems (OPTIMESS), Antwerp, Belgium, 2009, pp. 401–410
Bartscher, M., Hilpert, U., Goebbels, J., Weidemann, G., Enhancement and proof of accuracy of industrial computed tomography (CT) measurements, CIRP Ann. Manuf. Technol. 56, 495–498 (2007) CrossRefGoogle Scholar
Carmignato, S., Dreossi, D., Mancini, L., Marinello, F., Tromba, G., Savio, E., Testing of X-ray microtomography systems using a traceable geometrical standard, Meas. Sci. Technol. 20, 084021 (2009) CrossRefGoogle Scholar
P. Wenig, S. Kasperl, Examination of the Measurement Uncertainty on Dimensional Measurements by X-ray Computed Tomography, Proceedings of 9th European Conference on Non-Destructive Testing (ECNDT), Berlin, Germany, 2006
Bartscher, M., Neukamm, M., Hilpert, U., Neuschaefer-Rube, U., Härtig, F., Kniel, K., Ehrig, K., Staude, A., Goebbels, J., Achieving traceability of industrial computed tomography, Key Eng. Mater. 437, 79–83 (2010) CrossRefGoogle Scholar
ISO/IEC Guide 98-3 : 2008 – Uncertainty of measurement – Part 3 : Guide to the expression of uncertainty in measurement (GUM, 1995)
ISO 15530-3 : 2009 – Geometrical product specifications (GPS) – Coordinate measuring machines (CMM) : Technique for determining the uncertainty of measurement – Part 3 : Use of calibrated workpieces or measurement standards
ISO, GUM, Suppl. 1, JCGM 101, Evaluation of Measurement Data – Supplement 1 to the “Guide to the Expression of Uncertainty in Measurement” – Propagation of Distributions Using a Monte Carlo Method (2008)
Schmitt, R., Niggemann, Ch., Uncertainty in measurement for X-ray-computed tomography using calibrated workpieces, Meas. Sci. Technol. 21, 1–9 (2010) CrossRefGoogle Scholar
J. Hiller, Abschätzung von Unsicherheiten beim dimensionellen Messen mit industrieller Röntgen-Computertomographie durch Simulation, Dissertation, University of Freiburg i. Br., 2011
S. Gasparin, G. Tosello, H.N. Hansen, M.B. Jørgensen, Quality control of injection moulded micro mechanical parts, Proceedings of 5th International Conference on Multi-Material Micro Manufacture (4M/ICOMM), Karlsruhe, Germany, 2009, pp. 175–178
Tosello, G., Hansen, H.N., Gasparin, S., Applications of dimensional micro metrology to the product and process quality control in manufacturing of precision polymer micro components, CIRP Ann. Manuf. Technol. 58, 467–472 (2009) CrossRefGoogle Scholar
ISO 14253-2 : 2011 – Geometrical product specifications (GPS) – Inspection by measurement of workpieces and measuring equipment – Part 2 : Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification
ISO/TS 15530-3 : 2004 Geometrical Product Specifications (GPS) – Coordinate Measuring Machines (CMM) : Technique for Determining the Uncertainty of Measurement – Part 3 : Use of Calibrated Workpieces or Standards, i–v, pp. 1–16
F. Härtig, M. Krystek, Correct treatment of systematic errors for the evaluation of measurement uncertainty, Proceedings of 9th International Symposium on Measurement Technology and Intelligent Instruments (ISMTII), Saint Petersburg, 2009, Vol. 1, pp. 1-016–1-019
P. Müller, J. Hiller, A. Cantatore, L. De Chiffre, Inves-tigation of measuring strategies in computed tomography, International Conference on Advanced Manufacturing Engineering (NEWTECH), Brno, Czech Republic, 2011, pp. 31–42
C. Reinhart, C. Poliwoda, T. Guenther, W. Roemer, S. Maass, C. Gosch, Modern voxel based data and geometry analysis software tools for industrial CT, CD-ROM Proceedings of 16th WCNDT – World Conference on NDT, Montreal, Canada, 2004
Carmignato, S., Accuracy of industrial computed tomography measurements : experimental results from an international comparison, CIRP Ann. Manuf. Technol. 61, 491–494 (2012) CrossRefGoogle Scholar