Utjecaj parametara AC MIG postupka na zaostala naprezanja pri aditivnoj proizvodnji električnim lukom i žicom

master's thesis

• Title (english): Influence of AC MIG process parameters on residual stress in wire and arc additive manufacturing
• Author: Karlo Belošević
• Mentor: Ivica Garašić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-12-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

Ovaj diplomski rad analizira proces aditivne proizvodnje pomoću tehnologije električnog luka i žice (WAAM) s fokusom na zavarivanje aluminijskih legura korištenjem AC MIG postupka. Aditivna proizvodnja, poznata i kao 3D printanje, omogućuje izradu složenih geometrijskih oblika dodavanjem materijala sloj po sloj. U radu je posebna pažnja posvećena utjecaju ključnih parametara zavarivanja na zaostala naprezanja u aluminijskim legurama serije 6xxx, koja se ispituju metodom rendgenske difrakcije (XRD). Eksperimentalni dio uključuje analizu različitih konfiguracija parametara zavarivanja, kao što su omjer EN polariteta, frekvencija, i dodavanje helija, kako bi se optimizirala kvaliteta zavarenih spojeva. Rezultati istraživanja doprinose razumijevanju formiranja zaostalih naprezanja i poboljšanju procesa aditivne proizvodnje u industrijama kao što su zrakoplovna i automobilska.

Abstract (english)

This thesis analyses the additive manufacturing process using Wire Arc Additive Manufacturing (WAAM) technology, with a focus on welding aluminium alloys through the AC Metal Inert Gas (AC MIG) process. Additive manufacturing, also known as 3D printing, enables the production of complex geometric shapes by adding material layer by layer. The study pays special attention to the influence of key welding parameters on residual stresses in 6xxx series aluminium alloys, examined using the X-Ray Diffraction (XRD) method. The experimental part includes the analysis of various welding parameter configurations, such as the EN polarity ratio, frequency, and helium addition, to optimize the quality of weld joints. The research results contribute to the understanding of residual stress formation and the improvement of the additive manufacturing process in industries such as aerospace and automotive.

• Keywords: Aditivna proizvodnja; WAAM (Wire Arc Additive Manufacturing); AC MIG zavarivanje; aluminijske legure; zaostala naprezanja; rendgenska difrakcija (XRD)
• Keywords (english): Additive manufacturing; WAAM (Wire Arc Additive Manufacturing); AC MIG welding; aluminium alloys; residual stresses; X-Ray Diffraction (XRD)
• Language: croatian
• URN:NBN: urn:nbn:hr:235:266281
• Study programme: Title: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering, Mechanics and Robotics, Autonomous Systems, Mechatronics and Robotics; Course: Production Engineering; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka strojarstva (sveučilišni/a magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2026-12-05
• Created on: 2024-11-28 20:34:18