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Characterization of weld bead geometry in fibre laser butt welding of mild steel sheets by means of statistical modelling

Eghlio, R. M. and Pinkerton, A. J. and Li, L. (2012) Characterization of weld bead geometry in fibre laser butt welding of mild steel sheets by means of statistical modelling. Lasers in engineering, 22 (5-6). pp. 281-298. ISSN 0898-1507

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Abstract

This paper presents the effect of process parameters on the geometry characteristics in butt welding of 1.5 mm mild steel sheets using a I kW single mode fibre laser at a range of laser powers, welding speeds and laser focal point position. Experiments were planned using the statistical design of experiment (DoE) technique for optimizing the above selected welding parameters and statistical modelling technique was employed to understand their interactions and significance. Suitable parameters to achieve net-shape welds were identified. Experimental methodology and results are detailed and the results are discussed. Micro-hardness measurements and tensile stress testing were carried out. It has been shown that laser net-shape welded samples have superior mechanical properties.

Item Type: Article
Journal or Publication Title: Lasers in engineering
Uncontrolled Keywords: Fibre laser ; mild steel ; welding ; geometry ; net-shape ; strength ; statistical modelling ; design of experiment (DoE) technique
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 59500
Deposited By: ep_importer_pure
Deposited On: 26 Oct 2012 14:09
Refereed?: Yes
Published?: Published
Last Modified: 01 Apr 2014 09:44
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/59500

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