20.500.12556/RUL-128120 Spajanje aluminijastega čepa in termoplasta s tehniko kovičenja s trenjem Fritcion riveting of aluminium rivet and polymer V transportni industriji si prizadevajo zmanjšati maso prevoznih sredstev. Manjša masa pripomore k zmanjšanju emisij toplogrednih plinov. Velik vpliv na maso imajo uporabljeni materiali. Težke kovine lahko tako zamenjamo z uporabo lažjih zlitin in polimernih materialov. S kombiniranjem več različnih materialov so nastale tako imenovane večmaterialne strukture. V diplomskem delu je predstavljena metoda spajanja s kovičenjem s trenjem in vplivi parametrov na nastale spoje. Uporabljena materiala sta aluminijeva zlitina 2024 in polietermid. Nastale spoje smo najprej pregledali z rentgensko tomografijo, nato pa smo izvedli še izvlečni preizkus. Rentgenska tomografija nam je dala vpogled v geometrijo spoja, izvlečni preizkus pa silo, pri kateri se je spoj porušil. Pri vzorcih, kjer smo vnesli večjo mehansko energijo, je prišlo do večjih globin sidranja čepa v polimer. Ti vzorci so dosegli tudi večje sile izvleka. Izkazalo se je, da sta najpomembnejša parametra sila trenja prve faze in čas prve faze. Višji vnos energije v prvi fazi se odraža v večji deformaciji čepa med varjenjem. The transport industry is working to reduce weight of vehicles. Less weight helps to reduce greenhouse gas emissions. The materials used, have a high influence on weight. Heavy metals can thus be replaced using lighter alloys and polymeric materials. By combining several different materials, so called multi-material structures were created. This thesis presents the method of friction riveting and the effects of used parameters on the resulting joints. The materials used are aluminium alloy 2024 and polyethermide. The resulting joints were first examined by X-ray tomography, followed by a pullout test. X-ray tomography gave us an insight into the joint geometry while the pullout test resulted in force at which the joints broke. Samples produced with higher mechanical energy achieved greater anchoring depths of rivets into the polymetric base plates. These samples also achieved higher pullout forces. It turned out, that the most important parameters are friction force of the first phase and friction time of the first phase. Higher energy input in the first phase is reflected in greater deformation of the rivet during welding. aluminij PEI kovičenje s trenjem rentgenska tomografija izvlečni preizkus varjenje MIG aluminium PEI friction riveting X-ray tomography pullout test MIG welding true false false [H. Škrabar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2021-07-03 08:30:29 2021-07-03 08:30:36 2022-09-07 04:13:08 0000-00-00 00:00:00 2021 0 Ljubljana 0 XXII, 50 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 621.884:669.71:678(043.2) 228970 70933251 7302.pdf 7302.pdf 1 91C241FE6F7ECA7853AE2A3EFEBEBD37 ada6d82a8b90882816a7e5a5d9e741273c076f8b25afb857693c25f1c7e5de27 0c0a7844-dbc8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=144756 Fakulteta za strojništvo 0 0 0