20.500.12556/RUL-179936 Raziskava spajanja kovin in polimerov z uporabo laserskega mikrostrukturiranja in injekcijskega brizganja Research on joining metals and polymers using laser microstructuring and injection molding Namen raziskave je izboljšanje nosilnosti spojev med kovino in polimerom. Pri tem je uporabljeno lasersko graviranje z vlakenskim laserjem, kjer smo s pomočjo laserja naredili utore tipičnih širin 40 μm in globin 30 μm. Izdelani sta bili dve kombinaciji spojev: aluminij + TPE in aluminij + PA46, kjer smo uporabili različne variacije parametrov injekcijskega brizganja. Nosilnosti spojev smo izmerili s pomočjo nateznega preizkusa, kjer smo merili maksimalno silo in raztezek spoja pred porušitvijo. Meritve so pokazale izboljšanje nosilnosti spoja. Kombinacija aluminija in TPE pri zvišani temperaturi 90 °C izboljša nosilnost spoja za 38%. Spoj aluminija in PA46 je imel najboljšo nosilnost pri povišanem naknadnem tlaku 500 bar, ki je pokazal 84% boljšo nosilnost. Spreminjanje parametrov brizganja je razkrilo težavo z neustrezno oblikovanimi brizganimi izdelki, pri katerih so nastali notranji defekti polimera TPE. Nepravilno brizgani izdelki so tako negativno vplivali na nosilnost spoja. This research aimed to improve the load-bearing capacity of joints between metal and polymer materials. Laser surface structuring using a fiber laser was employed, where grooves with typical widths of 40 μm and depths of 30 μm were produced on the metal surface. Two joint combinations were fabricated: aluminum + TPE and aluminum + PA46, using different variations of injection molding parameters. The load-bearing capacity of the joints was evaluated by tensile testing, during which the maximum force and elongation of the joint prior to failure were measured. The results showed a significant improvement in joint strength. The aluminum + TPE combination exhibited a 38% increase in load-bearing capacity at an elevated temperature of 90 °C. The aluminum + PA46 joint achieved the highest load-bearing capacity at an increased holding pressure of 500 bar, resulting in an 84% improvement. Variation of the injection molding parameters revealed issues related to improperly formed molded parts, leading to internal defects in the TPE polymer. These improperly molded specimens negatively affected the load-bearing capacity of the joint. lasersko graviranje polimeri aluminij jeklo TPE PA46 laser technique polymers aluminium steel TPE PA46 true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-02-27 08:30:27 2026-02-27 08:30:31 2026-03-02 09:22:39 0000-00-00 00:00:00 2026 0 0 XX, 42 str. 2026 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9:621.9.048.7:667.6(043.2) 283271 270042371 46594.pdf 46594.pdf 1 90481297C7C4626DE5B5AB51FC32AA09 c655fc64da55ca9e4edfbcfe721671d903e5cb0fbb05fd97f3f6546e60865c78 defa18d2-13ad-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=228876 Fakulteta za strojništvo 0 0 0