B urak Karabulut

KU Leuven, Sint-Katelijne-Waver, Belgium

After gaining a master's degree in civil/structural engineering in 2016, Burak Karabulut has been involved in numerous R&D projects alongside his doctoral research. He obtained his PhD degree at KU Leuven/Belgium from the Faculty of Engineering Technology with his topic focusing on the fatigue behaviour of duplex welded details. He is currently a post-doctoral researcher at KU Leuven and he works on additive manufacturing of structural applications.


Today, wire arc additive manufacturing (WAAM) can be used to fabricate critical structural steel components. It allows to fabricate highly optimized shapes achieving very high levels of material’s capacity utilization. But there are certain scientific challenges linked to this manufacturing technique that need to be explored and the fatigue resistance of WAAM components is one of them. In this research, the behaviour of wire arc additively manufactured unalloyed S355 carbon steel elements is investigated analytically and experimentally. The sample was manufactured by cold metal transfer (CMT) welding process using the grade 3Dprint AM 35 (S355) following a welding procedure optimised to limit the welding-induced imperfections. A series of microstructural and mechanical investigations were carried out including: (i) hardness tests, (ii) static tensile tests, and (iii) cyclic fatigue tests in both longitudinal and transverse direction. The obtained results are then compared with existing research on similar details containing both unwelded base plates and WAAM components. This collated database of more than 700 reference test results is then used to assess the applicability of the current design guidelines to predict the fatigue life of WAAM components. Finally, proposals are made for the detail categories and the reliability of these proposals is then supported by the use Weibull models, commonly used in survival analysis.


Room 6Wednesday 29th November17:30-18:00Burak Karabulut
S01-2 Additive Manufacturing
119 - Numerical and experimental investigations of wire arc additively manufactured components made of 3Dprint AM35 grade
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