Method and apparatus for monitoring weld quality

Details Method and apparatus for monitoring weld quality Method and apparatus for monitoring weld quality

1993-05-17

1994-04-19

Albritton, C. L.

Electric heating

Metal heating

By arc

21912163, B23K 2602

Patent

active

053047745

ABSTRACT:
A method for monitoring welding of a workpiece includes selecting light of a predetermined wavelength from that emitted by plasma produced by the welding process, generating signals indicative of the selected light's intensity, and correlating those signals with the cross-sectional area of the weld. An apparatus for monitoring welding of a workpiece includes a filter for passing selected light of a predetermined wavelength emitted by plasma, a signal generator which produces signals indicative of the intensity of the selected light, and means for correlating the signals with the weld's cross-sectional area.

REFERENCES:
patent: 3485996 (1969-12-01), Chiou et al.
patent: 4007631 (1977-02-01), Saifi et al.
patent: 4711986 (1987-12-01), Lillquist et al.
patent: 4939336 (1990-07-01), Meyer et al.
patent: 5041714 (1991-08-01), Funk
patent: 5155329 (1992-10-01), Terada et al.

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