Automatic laser-based material identification and marking: a new approach

Ruediger Quay; R. Sattmann; Reinhard Noll

doi:10.1117/12.281100

18 August 1997 Automatic laser-based material identification and marking: a new approach

Ruediger Quay, R. Sattmann, Reinhard Noll

Proceedings Volume 3097, Lasers in Material Processing; (1997) https://doi.org/10.1117/12.281100
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

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 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.

Citation Download Citation

Ruediger Quay, R. Sattmann, and Reinhard Noll "Automatic laser-based material identification and marking: a new approach", Proc. SPIE 3097, Lasers in Material Processing, (18 August 1997); https://doi.org/10.1117/12.281100

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