20.500.12556/RUL-139349 Modeliranje elastokaloričnega pojava v ravnem in vijačno zvitem polimernem vlaknu Modeling of elastocaloric effect in straight and twisted and coiled polymer fiber V magistrskem delu obravnavamo elastokaloričen pojav pri polimerih. Postavljen je matematični model, pri katerem smo uporabili fenomeloški princip opisa fazne transformacije, ki je bil prvotno zasnovan za zlitine. Opravili smo meritve elastokaloričnega učinka s termo kamero in primerjali rezultate meritev z rezultati matematičnega modela. Pri tem smo primerjali ravni vlakni iz poliamida PA6 in polietilena HDPE, določili njihovo hladilno učinkovitost in izluščili bistvene vplivne dejavnike. Določili smo tudi hladilno učinkovitost vijačno zvitega vlakna HDPE in ugotovili višjo hladilno učinkovitost v primerjavi z ravnim vlaknom. The master thesis deals with the elastocaloric phenomenon in polymers. A mathematical model was set up, based on the phenomenological principle of phase transformation description, originally intended for alloys. We measured the elastocaloric effect with a thermal camera and compared the results with those from the mathematical model. We compared straight fibres made of polyamide PA6 and polyethylene HDPE, determined their cooling efficiency, and extracted essential influencing factors. We also determined the cooling efficiency of helically twisted HDPE fibres and found a higher cooling efficiency compared to straight fibres. elastokalorični učinek polimerno vlakno oblikovno-spominski učinek umetna mišica metamateriali fazna transformacija elastocaloric effect polymer fibre shape memory effect artificial muscle metamaterial phase transformation true false false [A. Varšek] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2022-09-01 08:30:57 2022-09-01 08:30:58 2023-10-20 09:25:04 0000-00-00 00:00:00 2022 0 Ljubljana 0 XXII, 66 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2023-08-31 519.876.5:66.012:66.021.4(043.2) 243914 119902723 17386.pdf 17386.pdf 1 AA5C18F96040A57B7570D32C9F768E24 0fde3fa35cf2c0b6cf57b263d47d3694da84644909c7d81c24d1e2ecda3ae0ce 9a1e524a-29bf-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159891 Fakulteta za strojništvo 0 0 0