20.500.12556/RUL-105477 Vpliv zapolnitve na mehanske lastnosti izdelkov iz PLA in ABS narejenih po metodi ciljnega nalaganja The effect of infill on mechanical properties of PLA and ABS products made by additive technologies Aditivne tehnologije temeljijo na nanašanju oz. utrjevanju materiala v plasteh. Najbolj znana je metoda ciljnega nalaganja. V magistrskem delu obravnavamo vpliv stopnje zapolnitve notranjosti izdelka na njegove mehanske lastnosti. Izdelan je plan eksperimentov na podlagi preliminarnih raziskav. Ugotoviti želimo primerno stopnjo zapolnitve s trikotno notranjo strukturo za materiala PLA in ABS. Po standardih za preizkušanje plastike SIST EN ISO 178 in SIST EN ISO 179 smo natisnili preizkušance ter izvedli upogibni preizkus in preizkus udarne žilavosti po Charpyju. Ugotovili smo, da material PLA prenaša večje upogibne obremenitve, medtem ko material ABS prenaša višjo udarno delo K. Mehanske lastnosti se linearno izboljšujejo z večanjem faktorja zapolnitve. Večje izboljšanje mehanskih lastnosti je opazno med 90 % in 100 % stopnjo zapolnitve. Zato je za bolj obremenjene dele smiselno uporabiti 100 % stopnjo zapolnitve. V primeru manjših obremenitev je primerneje izbrati manjšo stopnjo zapolnitve, da dosežemo večjo dimenzijsko natančnost. Additive technologies are based on depositing and hardening material in layers. Most known is FFF (eng. Fused filament fabrication), known as FDM (eng. Fused deposition modeling). In this thesis, the influence of infill structure density on mechanical properties of the product is examined. Based on preliminary research, a new plan of experiments is prepared. The study examines a suitable level of inner filling with a chosen triangular inner structure for PLA and ABS material. According to standards for testing plastic specimens SIST EN ISO 178 and SIST EN ISO 179, the task was to print samples and perform bending and Charpy test. The results showed that material PLA has better bending properties, while material ABS achieve higher impact toughness. While infill rate increase, mechanical properties linearly improve. Improvement in mechanical properties is significantly noticeable between 90 % and 100 % infill rate. Therefore, for more heavily loaded parts, it is reasonable to use a 100 % infill rate. In the case of smaller loads, a minimum infill rate is recommended to achieve greater dimensional accuracy. aditivne tehnologije metoda ciljnega nalaganja (FDM) notranja struktura stopnja zapolnitve mehanske lastnosti additive technologies fused filament fabrication inner structure infill fillness mechanical properties true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2018-12-01 07:45:31 2018-12-01 07:45:34 2023-11-17 13:00:03 0000-00-00 00:00:00 2018 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 211868 2982.pdf 2982.pdf 1 C3C96887408D4C08F39AAFAA2DE57CF7 ee9fc0e54fb759cf6924810e6ab33932213b44b3eb9edb9897ec2ba1777ef00c 2fbb5295-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=116138 Fakulteta za strojništvo 0 0 0