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Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten. Automatic laser based material identification and marking, a new approach
| Beckmann, L.H.J.F. ; European Optical Society -EOS-:
Lasers in material processing
Bellingham, Wash.: SPIE, 1997 (Europto series)
ISBN: 0-8194-2517-6
pp.392-399 : Ill., Lit. |
| Conference on Lasers in Material Processing <1997, München> |
|
| English |
| Conference Paper |
| Fraunhofer ILT () |
| laser based identification; laser-induced breakdown spectroscopy; laser marking; LIBS; plasma; plasma spectroscopy |
Abstract
Laser-Induced Breakdown Spectroscopy (LIBS) is a remote, online, in situ technique used for the quantitative analysis of elemental constituents in matrices such as steels, non ferrous metals, polymers and soils. A typical industrial application already established is the sorting of non ferrous metals for the purpose of recycling. A new device, the Laser Identification and Marking System (LIMAS) introduced here, uses a combination of material identification by means of LIBS and instantly marking the workpiece using the same Nd:YAG laser. This method was developed since the application required a strongly decreased probability of mixing up of different steel qualities in comparison to conventional methods. At the same time a decisive disadvantage of LIBS, the insufficient detection limits for several elements, can be lowered by using repetitive bursts of multiple laser pulses.