Abstract

There still exist permanent problems in obtaining high quality laser cuts on thin metal sheets, when producing small and delicate geometric structures. It is of great interest to get a reliable diagnosis about the quality of the cutting curve. We use two sensors of different spectral sensitivity, on the one hand to observe the intensity, on the other to compute temperature of the process. Correlation between the on-line calculated optical signals and the varying cutting quality is shown.

© 1996 IEEE