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

Journal article

Edwardson, S. P., Griffiths, J., Sheikholeslami, G. and Dearden, G. 2014. Optimization of beam mode for high efficiency laser thermal forming within metallurgical constraints. Physics Procedia. 56, pp. 1392-1399. https://doi.org/10.1016/j.phpro.2014.08.069
AuthorsEdwardson, S. P., Griffiths, J., Sheikholeslami, G. and Dearden, G.
Abstract

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 microstructural transformation.

KeywordsLaser forming; Laser bending; DP1000; Advanced high strength steels
Year2014
JournalPhysics Procedia
Journal citation56, pp. 1392-1399
PublisherElsevier
ISSN1875-3892
Digital Object Identifier (DOI)https://doi.org/10.1016/j.phpro.2014.08.069
Official URLhttps://www.sciencedirect.com/science/article/pii/S1875389214002144
Publication dates
Online09 Sep 2014
Publication process dates
Deposited12 Feb 2025
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Open
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https://repository.canterbury.ac.uk/item/9q496/optimization-of-beam-mode-for-high-efficiency-laser-thermal-forming-within-metallurgical-constraints

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