Closed-loop focus control system for laser welding
Conference
·
OSTI ID:535604
- Heriot-Watt Univ., Edinburgh (United Kingdom)
- Lumonics Ltd., Rugby (United Kingdom)
In this paper the authors describe a focus control system for Nd:YAG laser welding based on an optical sensor incorporated into the fibre delivery system to detect light generated by the process. This broadband light is separated into two wavelength bands, and simple electronic processing gives a signal proportional to focal error, as a result of chromatic aberrations in the optical delivery system. Focus control is demonstrated for bead-on-plate welds in different thicknesses of titanium alloy, aluminum alloy, mild steel and stainless steel. The control system works for both pulsed and continuous laser radiation.
- OSTI ID:
- 535604
- Report Number(s):
- CONF-961073-; TRN: 97:003388-0014
- Resource Relation:
- Conference: ICALEO `96: 15. international congress on applications of lasers and electro-optics, Detroit, MI (United States), 14-17 Oct 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the lasers and electro-optics for automotive manufacturing conference - ICALEO `96. Volume 82; PB: 181 p.
- Country of Publication:
- United States
- Language:
- English
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