engleski

INFLUENCE OF SURFACE DETERMINATION ON CT MEASUREMENT RESULTS

Computed tomography is a relatively new method in a field of dimensional measurement. The method allows non-destructive measurements and inspections of both inner and outer objects geometries. Also, the method allows conduction of different analysis on the same model obtained by one CT scanning which makes it very desirable in wide range of use. However, metrological traceability and measurement uncertainty are still not assessed and achieved. Since the prerequisite for wider implementation and use of the method for purposes of dimensional measurement is assessment of measurement uncertainty, many researches are focused to address this matter. In order to achieve metrological traceability, influence parameters as well as their impact on measurement results need to be defined. One of the main parameter is threshold determination. This paper deals with influence of threshold determination on CT measurement results of aluminium cylinders with different surface roughness.

computed tomography, threshold determination, dimensional measurements

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