Experimental evaluation of the uncertainty associated with the result of feature-of-size measurements through computed tomography

8th Brazilian Congress on Metrology

Fernandes, T.L.^1 ; Donatelli, G.D.^1 ; Baldo, C.R.^2

Centre for Metrology and Instrumentation - CMI, Reference Centres for Innovative Technologies - CERTI, Florianopólis

SC, Brazil^1

Centre for Engineering, Modelling and Applied Social Sciences - CECS, UFABC - Federal University of ABC, Santo André

SP, Brazil^2

关键词: Dimensional Metrology;    Experimental approaches;    Experimental evaluation;    Measurement uncertainty;    Measurements of;    Quality-control-loops;    Size measurements;    Test object;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012056/pdf
DOI  :  10.1088/1742-6596/733/1/012056

来源: IOP

【 摘 要 】

Computed tomography for dimensional metrology has been introduced in quality control loop for about a decade. Due to the complex measurement-error cause system, generally no consistent measurement uncertainty reporting has been made. The ISO 15530-3 experimental approach, which makes use of calibrated parts, has been tested for estimating the uncertainty of CT-based measurements of features of size of a test object made of POM. Particular attention is given to the design of experiment and to the measurement uncertainty components. The most significant experimental findings are outlined and discussed in this paper.