Towards controlled 3D laser forming

Edwardson, Stuart and Griffiths, Jonathan David and Dearden, Geoff and Watkins, Ken (2010) Towards controlled 3D laser forming. In: MATADOR 2010, 14 – 16th July 2010, Manchester.

Full content URL: http://dx.doi.org/10.1007/978-1-84996-432-6_113

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Item Type:Conference or Workshop contribution (Paper)
Item Status:Live Archive

Abstract

2-Dimensional laser forming can currently control bend angle, with reasonably accurate results, in various materials including aerospace alloys. However, this is a different situation for 3-Dimensional laser forming. To advance this process further for realistic forming applications and for straightening and aligning operations in a manufacturing industry it is necessary to consider larger scale controlled 3D laser forming. The work presented in this paper uses a predictive and adaptive approach to control the laser forming of mild steel and aluminium sheet into a desired surface. Key to the control of the process was the development of a predictive model to give scan strategies based on a required geometry and the surface error. The forming rate and distribution of the magnitude of forming across the surface were controlled in the closed loop by the process speed. When the geometry is not formed within one pass, an incremental adaptive approach is used for subsequent passes, utilising the error between the current and desired geometry to give a new scan strategy, thus any unwanted distortion due to material variability can be accounted for and distortion control and removal is possible.

Additional Information:See also http://eprints.lincoln.ac.uk/11337/
Keywords:Laser forming, Bending, 3D closed loop
Subjects:H Engineering > H100 General Engineering
Divisions:College of Science > School of Engineering
Related URLs:
ID Code:11335
Deposited On:29 Jul 2013 08:45

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