Show simple item record

dc.contributor.advisorAanstad, Magnus
dc.contributor.authorArumairasa, Hans Ivar
dc.date.accessioned2020-04-23T11:00:52Z
dc.date.available2020-04-23T11:00:52Z
dc.date.issued2019-06-28
dc.description.abstractManufacturing of thin wall structure by wire arc additive manufacturing (WAAM) is on the main application of additive manufacturing. 3D-printing technology has significant advantages over traditional milling and machining techniques or welded analogs. Thin wall structure constitutes an essential and growing proportion of engineering construction, within common areas as in structural aerospace and large scale-components. The dissertation utilized a layer-wise production technique known as gas arc tungsten arc welding (GTAW), performed by a programmed KUKA-30 robot. The thesis aspect of welded structures is the degree of how disposable the product is after manufactured, due to the different set of welding parameters. Therefore are an investigation of residual stresses and deformation implemented by different structure geometries. The research includes two practical and analytical experiment tests in addition to an FEA-simulation. The experiments involve; ultrasound measurement by a self-programmed measuring device developed by BiT, calculation due to measured deformation along the welding length and simulation performed in ANSYS. Findings of the methods implicate an estimated value of residual stresses and distortion in the thin wall structure and substrate. Through ten tests of the welding process can the technique of this technology state as slow with frequently sources of error, using the KUKA-30 robot welding system for a certain height. The level of residual stresses depends on the severity of the manufacturing process, which this research confirmed a generally low value along the length of the structural components and base plate due to the parameters developed in this study.en_US
dc.identifier.urihttps://hdl.handle.net/10037/18108
dc.language.isoengen_US
dc.publisherUiT Norges arktiske universiteten_US
dc.publisherUiT The Arctic University of Norwayen_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2019 The Author(s)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/4.0en_US
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)en_US
dc.subject.courseIDSHO6266
dc.subjectVDP::Teknologi: 500::Maskinfag: 570en_US
dc.subjectVDP::Technology: 500::Mechanical engineering: 570en_US
dc.subjectAdditive Manufacturingen_US
dc.subjectRobotic weldingen_US
dc.subjectResidual stressesen_US
dc.subjectwelding processen_US
dc.subjectGas Tugten Arc Weldingen_US
dc.titleThin Wall Structure by Weldingen_US
dc.typeMaster thesisen_US
dc.typeMastergradsoppgaveen_US


File(s) in this item

Thumbnail
Thumbnail
Thumbnail
Thumbnail

This item appears in the following collection(s)

Show simple item record

Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)