20.500.12556/RUL-114821 Vpliv temperature na mehanske lastnosti 3D tiskanih izdelkov The influence of temperature on mechanical properties of 3D printed products Namen zaključne naloge je raziskava in določitev vpliva temperature tiskanja na mehanske in geometrijske lastnosti 3D tiskanih izdelkov. V okviru naloge smo s pomočjo namiznega 3D tiskalnika Sharebot natisnili vzorce za natezni preizkus standardnih dimenzij po ISO 527. Vzorce smo natisnili s pomočjo filamentov polilaktične kisline (PLA) pri različnih temperaturah šobe na tiskalni glavi, vsi ostali parametri tiskanja so bili ves čas enaki. Temperaturo šobe smo spreminjali v inkrementih po 10°C v območju od 170°C do 230°C. Vpliv temperature na geometrijske lastnosti smo določili z merjenjem geometrije na izbranih mestih, mehanske lastnosti preizkušancev pa smo določili s pomočjo nateznega preizkusa in nanoindentacije. Na podlagi meritev smo želeli določiti optimalno temperaturno območje tiskanja, pri katerem bi 3D tiskani izdelki imeli najboljše mehanske in geometrijske lastnosti. Rezultati meritev so pokazali, da so bili vzorci geometrijsko najbolj stabilni in so imeli najboljše mehanske lastnosti pri tiskanju s temperaturo 200 °C. The purpose of the presented thesis is to investigate the effect of printing temperature on the mechanical and geometric properties of 3D printed polymer products. As part of the study, samples for tensile testing of standard dimensions according to ISO 527 were printed using the Sharebot desktop 3D printer. Samples were printed with polylactid filaments (PLA) at different temperatures of the nozzle on the printhead, while all other printing parameters were kept constant. The nozzle temperature was changed in increments of 10 °C in the range from 170 °C to 230 °C. The influence of printing temperature on the geometric properties was determined by measuring the geometry at selected points, while the mechanical properties of the tested products were determined by tensile test and nanoindentation. On the basis of measurements, we tried to determine the optimal printing temperature range in which 3D printed products would have the best mechanical and geometric properties. The results showed that the samples were geometrically the most stable and had the best mechanical properties at printing temperature of 200 °C. 3D tiskanje temperatura dimenzijska stabilnost mehanske lastnosti natezni preizkusi nanoindentacija 3D printing temperature dimensional stability mechanical properties tensile tests nanoindentation true false false [J. Janežič] Slovenski jezik Angleški jezik Zaključna naloga 2020-03-14 08:30:25 2020-03-14 08:30:30 2023-11-14 12:51:00 0000-00-00 00:00:00 2020 0 Ljubljana 0 XV, 42 f., [7] f. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9.04:536.5:620.17(043.2) 220069 17092123 4913.pdf 4913.pdf 1 20327D3181BD002181BB6067E76A13A1 8f0ccdd3ead654006d9277fd245aa3886b5007681730f03b9395e7994a6327e5 4663875c-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=127119 Fakulteta za strojništvo 0 0 0