20.500.12556/RUL-172148 Lasersko udarno utrjevanje oblikovno obločno navarjenih aluminijevih zlitin Laser shock peening of wire arc additively manufactured aluminium alloys V diplomski nalogi smo preučevali vpliv laserskega udarnega utrjevanja brez zaščitne prevleke (LSPwC) na aluminijeve zlitine, izdelane s tehnologijo oblikovnega obločnega navarjanja WAAM. Osredotočili smo se na analizo zaostalih napetosti in površinske topografije pri vzorcih, ki so bili obdelani z različnimi kombinacijami parametrov LSPwC (gostota moči in stopnja prekritja). Poleg tega smo preučevali tudi vpliv med-procesnih vibracij, ki smo jih uvedli med samim postopkom navarjanja, in analizirali njihov učinek na končno topografijo in napetostno stanje površinskega sloja materiala. Meritve zaostalih napetosti smo izvedli z uporabo rentgenske difrakcijske metode (XRD), topografijo površin pa smo ovrednotili s pomočjo digitalne mikroskopije. Rezultati so pokazali, da lahko z ustrezno kombinacijo obdelovalnih parametrov in uporabo vibracij med WAAM postopkom dosežemo bistveno izboljšano stanje zaostalih napetosti ter zmanjšamo valovitost na površini. In this thesis, we investigated the influence of laser shock peening without coating (LSPwC) on aluminum alloys manufactured using wire arc additive manufacturing (WAAM). The study focused on the analysis of residual stresses and surface topography in specimens treated with various combinations of LSPwC parameters (power density and overlap rate). Additionally, we examined the effect of inter-process vibrations introduced during the WAAM process and evaluated their impact on the final surface topography and residual stress state. Residual stresses were measured using X-ray diffraction (XRD), while surface topography was evaluated via digital microscopy. The results showed that an appropriate combination of LSPwC processing parameters and the application of inter-process vibrations during WAAM can significantly improve the residual stress state and reduce surface waviness. oblikovno obločno navarjanje - WAAM lasersko udarno utrjevanje brez zaščitne prevleke - LSPwC površinska topografija zaostale napetosti valovitost med-procesne vibracije wire arc additive manufacturing – WAAM laser shock peening without coating – LSPwC surface topography residual stresses waviness inter-process vibrations true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-06 08:31:34 2025-09-06 08:31:36 2025-10-07 03:55:04 0000-00-00 00:00:00 2025 0 0 XII, 46 f. 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9.048.7:621.791.75:669.715(043.2) 275637 248399619 43275.pdf 43275.pdf 1 B38BFDE2C33D7D17044BCE44451CBF1D e38b2bfd21ff70315b4c95c371b94fa4fb0bed77b582950b66d4142444c5edce fc804892-8aea-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=215948 Fakulteta za strojništvo 0 0 0