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Proceedings Paper

Temperature modeling and in-process quality inspection in laser beam cutting of contour elements
Author(s): Andreas Hillebrand; Holger Heyn; Ingo Decker; Helmut Wohlfahrt
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Paper Abstract

For laser beam cutting of contour elements, the influence of the contour geometry has been examined due to a local and time-dependent preheating of the material. The paper presents a simulation of the temperature field in workpieces with different cutting contours calculated by the finite element method. By measuring the light emission from the cutting front and the molten material, the dynamical behavior of the cutting process can be characterized. The comparison of the local temperature at the time the laser beam passes and the obtained process signals with the resulting cut quality reveals the influence of preheating on the striation formation, on local cut surface defects, and on clinging dross. The simulation can help to detect critical contour elements for a given material and parameters set and to optimize the process parameters for a given contour.

Paper Details

Date Published: 7 September 1994
PDF: 12 pages
Proc. SPIE 2207, Laser Materials Processing: Industrial and Microelectronics Applications, (7 September 1994); doi: 10.1117/12.184749
Show Author Affiliations
Andreas Hillebrand, Technische Univ. Braunschweig (Germany)
Holger Heyn, Technische Univ. Braunschweig (Germany)
Ingo Decker, Technische Univ. Braunschweig and Univ. of Essex (Germany)
Helmut Wohlfahrt, Technische Univ. Braunschweig (Germany)

Published in SPIE Proceedings Vol. 2207:
Laser Materials Processing: Industrial and Microelectronics Applications
Eckhard Beyer; Maichi Cantello; Aldo V. La Rocca; Lucien Diego Laude; Flemming O. Olsen; Gerd Sepold, Editor(s)

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