Optical focus control system for laser welding and direct casting

Optics and Lasers in Engineering

Volumn 34, Issue 4-6, 2000, Pages 415-427

  Hand, D P ^a   Fox, M D T ^a   Haran, F M ^a   Peters, C ^b   Morgan, S A ^c   McLean, M A ^c   Steen, W M ^c   Jones, J D C ^a  

^a HERIOT WATT UNIVERSITY   (United Kingdom)

^b GSI Lumonics   (United Kingdom)

^c UNIVERSITY OF LIVERPOOL   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

LASER BEAM WELDING; METAL CASTING; PROCESS CONTROL; PYROMETRY;

DIRECT CASTING;

OPTICAL SENSORS;

EID: 0034290084     PISSN: 01438166     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0143-8166(00)00084-1     Document Type: Article

References (11)

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2. McLean MA, Shannon GJ, Steen WM. Laser Generating Metallic Components. Proceedings of the GCL High Powered Laser Conference (GCL/HPL '96) SPIE, vol. 3092. 1996. p. 753-6.
3. Mueller R M, W W Duley W W. Application of a capacitive autofocus system to laser welding. Proceedings of ICALEO '98, Orlando, USA., Section C. p. 262-7.
4. Hand D.P., Peters C., Jones J.D.C. Nd. YAG laser welding process monitoring by non-intrusive optical detection in the fibre optic delivery system Measurement Sci Technol. 6:1995;1389-1394.
5. Bentley JP, Principles of measurement systems. London: Longman, 1983. p. 342.
6. Fox MDT, Peters C, Hand DP, Jones JDC. Applications of optical sensing for laser cutting. Proceedings of ICALEO '99, San Diego, USA, paper 1503.
7. Fox MDT, French P, Hand DP, Jones JDC. Optical focus control for laser percussion drilling. Proceedings of ICALEO '99, San Diego, USA, paper 1201.
8. Klein T., Vicanek M., Kroos J., Decker I., Simon G. Oscillations of the keyhole in penetration laser beam welding. J Phys. 27:1994;2023-2030.
9. Haran F.M., Hand D.P., Ebrahim S.M., Peters C., Jones J.D.C. Optical signal oscillations in laser keyhole welding and potential application to lap welding. Measurement Sci Technol. 8:1997;627-633.
10. Fox MDT, Peters C, Blewett IJ, Hand DP, Jones JDC. Real-time optical monitoring of gas shield condition during Nd:YAG laser welding. Proceedings of ICALEO '98, Orlando, USA, Section C p. 62-8.
11. Hand DP, Peters C, Fox MDT, Jones JDC. Optical sensor for detection of errors in Nd:YAG laser overlap welding of zinc-coated steel. In Proceedings of the Institution of Mechanical Engineers part B, Journal of Engineering Manufacture, accepted for publication.