Multiparametric Investigation of Welding Techniques on Toe Radius of High Strength Steel at Low-Temperature Levels Using 3D-Scanning Techniques

Randić, Miroslav; Pavletić, Duško; Turkalj, Goran

doi:10.3390/met9121355

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Multiparametric Investigation of Welding Techniques on Toe Radius of High Strength Steel at Low-Temperature Levels Using 3D-Scanning Techniques

Miroslav Randić

^1,*

Duško Pavletić

² and

Goran Turkalj

Branch Office Rijeka, Croatian Register of Shipping, Rijeka 51000, Croatia

Department of Industrial Engineering and Management, Faculty of Engineering, University of Rijeka, Rijeka 51000, Croatia

Department of Engineering Mechanics, Faculty of Engineering, University of Rijeka, Rijeka 51000, Croatia

Author to whom correspondence should be addressed.

Metals 2019, 9(12), 1355; https://doi.org/10.3390/met9121355

Received: 16 November 2019 / Revised: 4 December 2019 / Accepted: 10 December 2019 / Published: 17 December 2019

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Abstract

To avoid the occurrence of surface cracks at the welds, it is important to lower the stress concentration in the zone of the weld face by an appropriate choice of parameters. A plethora of experiments was conducted varying four welding techniques. The welded samples were scanned with 3D scanners and the toe radius was measured on each sample. The significance of the obtained results was analyzed using Pareto diagrams. The experiment results analysis shows that the length of the electrode stick-out has a significant influence on the toe radius, while the shielding gas has a great effect on the toe radius. Moreover, with the analysis of results obtained by experiments it was proved that the interaction of the torch angle and the number of cover passes, as well as that of the torch angle and the shielding gas, has a significant influence on the toe radius.

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Keywords: welded joint; geometric stress concentration factor; toe radius; welding techniques; 3D-scanner; sensitivity analysis; butt-welded joint

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MDPI and ACS Style

Randić, M.; Pavletić, D.; Turkalj, G. Multiparametric Investigation of Welding Techniques on Toe Radius of High Strength Steel at Low-Temperature Levels Using 3D-Scanning Techniques. Metals 2019, 9, 1355. https://doi.org/10.3390/met9121355

AMA Style

Randić M, Pavletić D, Turkalj G. Multiparametric Investigation of Welding Techniques on Toe Radius of High Strength Steel at Low-Temperature Levels Using 3D-Scanning Techniques. Metals. 2019; 9(12):1355. https://doi.org/10.3390/met9121355

Chicago/Turabian Style

Randić, Miroslav, Duško Pavletić, and Goran Turkalj. 2019. "Multiparametric Investigation of Welding Techniques on Toe Radius of High Strength Steel at Low-Temperature Levels Using 3D-Scanning Techniques" Metals 9, no. 12: 1355. https://doi.org/10.3390/met9121355

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Multiparametric Investigation of Welding Techniques on Toe Radius of High Strength Steel at Low-Temperature Levels Using 3D-Scanning Techniques

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