Vodice The Imperial Park Hotel 26 - 28 March 2025
27 th International Conference on Heating, Cooling and Air-conditioning
ABSTRACT
PAPER
Maša MILANOVIĆ-LITRE, mag. ing. mech. University of Zagreb Faculty of Mechanical Engineering and Naval Architecture Ulica Ivana Lučića 5 10 000 Zagreb Croatia e-mail: masa.milanovic.litre@fsb.unizg.hr
MP4
VIDEO
She graduated in 2022 from the undergraduate and in 2024 from the graduate studies in mechanical engineering at the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb (FSB). Since 2024, she has been a junior researcher on the SensMonCT II project at the FSB's Chair of Measurement and Control of the Department of Quality.
DETERMINATION OF TEMPERATURE INDUCED X-RAY SOURCE SHIFTS IN A CT SCANNER izv. prof. dr. sc. Marko KATIĆ University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia dr. sc. Martina ODELJAN University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia prof. emer. Antun GALOVIĆ University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
X-ray computed tomography (XCT) is a non-de- structive imaging technique widely applied in di- mensional metrology for precise measurement of complex geometries. However, its accuracy can be affected by thermal effects. A major chal- lenge is the presence of an active heat source in the metrology loop, causing temperature-depen- dent variations in the measurement object as well as scanner’s internal components. These thermal variations can undermine accuracy and introduce uncertainties that are challenging to quantify
and mitigate. This paper investigates the impact of temperature fluctuations on the displacement of the source in a CT scanner. Temperature mea- surements were acquired at key locations, includ- ing the circulating coolant system. Based on these measurements, the thermal fluxes dissipated from the system were calculated. Thermal dis- placement of the radiation source was measured using inductive probes and by tracking the dis- placement of a reference projection.
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4th Thematic Section - ENERGY EFFICIENCY AND RENEWABLES
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