Two different high strength steel grades have been welded by a fibre laser to create a fillet corner joint. The purpose of this experiment is to use thinner materials of higher strength as a weight reduction strategy. The sensitivity of the welding process to the beam inclination angle, the beam position and the focal plane position were studied. High-speed imaging, process emission monitoring, measurement of the weld surface topography, mechanical testing and FE-analysis have been used to analyse the process and the resulting weld. A combined study by these methods gives a more comprehensive picture for studying the weld quality. A Bifurcation Flow Chart (BFC) has been applied as a new method to standardise and generalise the findings.
Fibre laser welding for lightweight design
Jan Karlsson, Alexander Kaplan; November 27–30, 1990. "Fibre laser welding for lightweight design." Proceedings of the International Laser Safety Conference. ICALEO® 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Cincinnati, Ohio, USA. (pp. pp. 1548-1557). ASME. https://doi.org/10.2351/1.5061529
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