Laser Welding of Girth Joint – Numerical Simulation and Experimental Investigation

Laser Welding of Girth Joint – Numerical Simulation and Experimental Investigation


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Abstract. Laser welding of similar girth joints is a commonly used method of permanent joining process. Parameters can be easily analytically estimated. Nevertheless, performing more advanced types of joints, such as girth joints, is more complex. Estimating process parameters using numerical simulation can be performed. Assuming laser beam energy absorption in material heat expansion isotherms of a melting point can be calculated. Performing girth joint requires adequate angle process head orientation and welding parameters. Laser welding process is an unconventional method and does not require any additional material. The arc welding of a flange joint requires a multi run welding, and a single run welding can be performed using a laser beam. The article presents the possibility of numerical modeling laser welding of girth joints using the SimufactWelding software. Thermal and thermo-mechanical analysis were performed. The parameters estimated in the laser welding simulation are the following: output power, feed rate, efficiency and intensity distribution – Gaussian parameter. Low carbon construction steel S235JR is the material used for the process simulation. Double cylindrical simulated laser beam absorption and keyhole effect are the heat source used for the laser welding simulation. Thermal and thermo-mechanical properties such as fusion zone, distortion, displacement and hardness distribution were calculated [1, 2]. Experimental laser welding of lap joints was performed based on estimating parameters. Welding process using 6 kW CO2 laser with simulated parameters in order to compare numerical and experimental results was performed.

Laser Welding, Numerical Simulation, Girth Joints, Circumferential Trial Joint

Published online , 6 pages
Copyright © 2020 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: DANIELEWSKI Hubert, SKRZYPCZYK Andrzej, PAŁA Tadeusz, FURMAŃCZYK Piotr, TOFIL Szymon and WITKOWSKI Grzegorz, Laser Welding of Girth Joint – Numerical Simulation and Experimental Investigation, Materials Research Proceedings, Vol. 17, pp 264-269, 2020


The article was published as article 39 of the book Terotechnology XI

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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