Faculty of Mechanical Engineering, Lj. (FSLJ)
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Eksperimentalno vrednotenje volumskega termičnega raztezanja poliuretana za izdelavo modelov, orodij in kalupov : diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje StrojništvoBrus, Miha, strojnikV strojništvu se poliuretan pogosto uporablja pri izdelavi preciznih prototipnih orodji, kalupov in modelov (kontrolnih naprav). Ti izdelki imajo visoke zahteve za dimenzijsko točnost. Termični ... raztezek poliuretana je lahko razlog, da izdelki postanejo dimenzijsko neustrezni. S CNC strojem smo izdelali, s CMM strojem pa eksperimentalno določili spremembo volumna izbranih testnih teles iz poliuretana zaradi termičnega raztezanja. Podali smo oceno vpliva temperature na dimenzijsko točnost izdelkov. Ugotovljeno je bilo, da ima temperatura oz. njena sprememba velik vpliv na dimenzijsko ustreznost precizno izdelanih izdelkov iz poliuretana, kar pa se v praksi prepogosto zanemari. Izdelava testnega volumna s postopkom lepljenja več enako velikih kosov poliuretana z dvokomponentnim lepilom ima vpliv na končni termični raztezek tako narejenega telesa, nima pa vpliva na njegov temperaturni odziv po času. Za izdelke, izdelane iz homogenega kosa poliuretana, velja predpostavka, da za koeficient volumskega termičnega raztezka lahko vzamemo trikratno vrednost linearnega termičnega raztezka (ß ? 3?).Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Brus], 2022Language - slovenianCOBISS.SI-ID - 120310787
Author
Brus, Miha, strojnik
Other authors
Perpar, Matjaž, strojnik
Topics
diplomske naloge |
termično raztezanje snovi |
temperatura |
volumski raztezek trdnin |
poliuretan |
meritve |
thesis |
thermal expansion of matter |
volumetric expansion of solids |
polyurethane |
measurements |
temperature
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Brus, Miha, strojnik | ![]() |
Perpar, Matjaž, strojnik | 04471 |
Source: Personal bibliographies
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