Optimization of beam mode for high efficiency laser thermal forming within metallurgical constraints

Edwardson, Stuart, Griffiths, Jonathan David, Sheikholeslami, Ghazal and Dearden, Geoff (2014) Optimization of beam mode for high efficiency laser thermal forming within metallurgical constraints. Physics Procedia, 56 . pp. 1392-1399. ISSN 1875-3892

Full content URL: http://dx.doi.org/10.1016/j.phpro.2014.08.069

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Item Type:Article
Item Status:Live Archive


In the laser forming (LF) process, laser induced temperature distribution within the work-piece is of paramount importance. Through control of process parameters and depending on work-piece geometry, the temperature distribution can be altered to achieve either localized plastic compressive strains or elastic-plastic buckling. Conventionally, three process parameters are manipulated in order to control the temperature distribution within the work-piece; traverse speed, average power and spot size. Additionally, the intensity distribution and geometrical shape of the beam incident on the work-piece surface can be manipulated. The latter has the potential to be useful in maintaining bend angle per pass whilst working within strict metallurgical constraints. In this paper, the effect of beam intensity distribution and geometrical shape on the LF of automotive grade high strength DP 1000 steel sheet is investigated numerically and experimentally, with particular emphasis on optimization for minimal micro-structural transformation.

Additional Information:8th International Conference on Laser Assisted Net Shape Engineering LANE 2014, September 08-11, Fürth, Germany
Keywords:Laser Forming, Laser Bending, DP1000, Advanced High Strength Steels, JCOpen
Subjects:F Physical Sciences > F361 Laser Physics
H Engineering > H300 Mechanical Engineering
Divisions:College of Science > School of Engineering
ID Code:14878
Deposited On:10 Sep 2014 17:14

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