20.500.12556/RUL-142800 Optimizacija laserskega mikrovarjenja električnih kontaktov Optimization of Laser Microwelding of Electrical Contacts V magistrski nalogi smo raziskali proces laserskega mikrovarjenja električnih kontaktov, saj na proizvodni liniji je bilo relativno veliko izmeta zaradi napake nesimetričnosti zvarov. V ta namen, je bilo potrebno definirati najvplivnejše parametre in posledično optimizirati proces. Najprej smo iz teoretičnega vidika ločili lasersko varjenje na absorpcijo svetlobe in segrevanje materiala. Predstavili smo energijsko bilanco in porazdelitev temperature za primere enostavnejših toplotnih virov. Iz teoretičnih osnov smo nato prešli na simuliranje segrevanja v programskem okolju končnih elementov. Uporabili smo Gaussov intenzitetni profil in dobljene rezultate primerjali z zvari iz eksperimentov. Ugotovili smo, da neglede na čas obsevanja, ki je za naš slučaj v rangu milisekund, porazdelitev moči ima ključni vpliv. In this work, we investigated the process of laser microwelding of electrical contacts, since there was a relatively large amount of waste from the production line due to the asymmetry of the welds. For this purpose, it was necessary to define the most influential parameters and consequently optimize the process. First, from a theoretical point of view, we separated laser welding into light absorption and material heating. We then presented the required energy balance and temperature distribution for some cases of simpler heat sources. From the theoretical basics, we then moved on to simulating heating in a finite element software environment. We used a Gaussian intensity profile and compared the obtained results with welds from the experiments. We found that regardless of the irradiation time, which in our case is in the range of milliseconds, the power distribution has a key influence. laser mikrovarjenje absorpcija intenzitetni profil metoda končnih elementov priprava vzorcev laser microwelding absorption intensity profile finite element method sample preparation true false false [A. Nanut] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2022-11-26 08:30:23 2022-11-26 08:30:29 2023-11-16 09:18:03 0000-00-00 00:00:00 2022 0 Ljubljana 0 XX, 56 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.725(043.2) 248651 139522819 22518.pdf 22518.pdf 1 FE1A7211301A9E06BD2B7543EAA975C8 cb5672deb5a74b8456b633e58327dc448c1d5d98fc624784207b0c40f55c719c 1188e108-6d5c-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164291 Fakulteta za strojništvo 0 0 0