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KEY FACTORS INFLUENCING THE BEND PER PASS IN LASER FORMING

Laser Group at Liverpool > KEY FACTORS INFLUENCING THE BEND PER PASS IN LASER FORMING

ICALEO® 2007 Congress Proceedings, Laser Materials Processing Conference
Paper P506 pp508-514

IBSN: 13#978-0-912035-88-8 & 10#0-912035-88-9

S. P. Edwardson, E.Abed, C. Carey, K. R. Edwards, K. Bartkowiak, G.Dearden,
K. G. Watkins
 
Abstract: Laser forming offers the industrial promise of controlled shaping of metallic and non-metallic components for prototyping, the correction of design shape or distortion and precision adjustment applications. The potential process advantages include precise incremental adjustment, flexibility of application and no mechanical ‘spring-back’ effect. To date there has been a considerable amount of work carried out on two-dimensional laser forming, using multi-pass straight line scan strategies to produce a reasonably controlled bend angle in a number of materials, including aerospace alloys. A key area, however, where there is a limited understanding, is the variation in bend angle per pass during multi-pass laser forming along a single irradiation track, in particular the decrease in bend angle per pass after many irradiations for a given set of process parameters. Understanding of this is essential if the process is to be fully controlled for a manufacturing environment. The research presented in this paper through empirical data offers a coherent picture of the key influencing factors and at which point in the bend evolution each is active.
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