Abstract
Using industrial computed tomography (CT) in measuring dimensional parameters (such as diameter, distance) of manufactured parts becomes more and more popular due to its advantages such as being a nondestructive method and possibility to complete complex shape measurements rapidly. However, the accuracy and precision of the measured values are required to be validated by quality control. The complicated structure of multistep processing contribute to measurement errors and uncertainties through various factors. Among them, temperature change during the operation of CT machine possesses a high potential influence. Two test geometries created in Catia V5 were modelled in Marc Mentat Finite Element software considering different materials (PMMA, Al, AlMgSi1) to study the deformation behavior against the change of temperature during the CT measurement process. The results of simulations provided an appropriate point of view about the effect of the temperature parameter to the measurement accuracy and uncertainties
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