Electric heating – Metal heating – By arc
Patent
1992-02-27
1994-02-01
Shaw, Clifford C.
Electric heating
Metal heating
By arc
395 22, B23K 9095
Patent
active
052834182
ABSTRACT:
Methods and apparatus for monitoring an arc welding process are disclosed. In a preferred embodiment, the present invention creates a digital representation of the arc created during welding and, using a neural network computer, determines if the arc is representative of normal or abnormal welding conditions. The neural network disclosed is trained to identify abnormal conditions and normal conditions and may be adaptively retrained to classify images that are not in the initial set of normal and abnormal images. In certain embodiments, other data, such as current, weld wire emission spectra, or shielding gas flow rate are also collected and the neural network is trained to monitor these data. Also, in certain embodiments, an audio signal is collected from the vicinity of the welding process and is used by the neural network computer to further classify the arc as normal or abnormal. The present invention is most preferably implemented in repetitive and continuous welding operations, such as those encountered in the manufacture and rebuilding of steam turbines.
REFERENCES:
patent: 4561059 (1985-12-01), Davis et al.
patent: 4589140 (1986-05-01), Bishop et al.
patent: 4633554 (1987-01-01), Clark et al.
patent: 4660166 (1987-04-01), Hopfield
patent: 4675730 (1987-06-01), Adomaitis et al.
patent: 4679077 (1987-07-01), Yuasa et al.
patent: 4724524 (1988-02-01), Thomas et al.
patent: 4739404 (1988-04-01), Richardson
patent: 4846928 (1989-07-01), Dolins et al.
patent: 4853680 (1989-08-01), Thomas
patent: 4868649 (1989-09-01), Gaudin
patent: 4869109 (1989-09-01), Miglianico et al.
patent: 4877940 (1989-10-01), Pangs et al.
patent: 4893388 (1990-01-01), Amos et al.
patent: 4897519 (1990-01-01), Clark et al.
patent: 4903888 (1990-02-01), Clark et al.
patent: 4912654 (1990-03-01), Wood
patent: 4916625 (1990-04-01), Davidson et al.
patent: 4918427 (1990-04-01), Thomas et al.
patent: 4918517 (1990-04-01), Burgoon
patent: 4933871 (1990-06-01), DeSieno
patent: 4940390 (1990-07-01), Clark et al.
patent: 4951218 (1990-08-01), Okumura et al.
patent: 4954964 (1990-09-01), Singh
patent: 4965725 (1990-10-01), Rutenberg
patent: 4989159 (1991-01-01), Liszka et al.
patent: 4995087 (1991-02-01), Rathi et al.
patent: 4998005 (1991-03-01), Rathi et al.
patent: 5001714 (1991-03-01), Stark et al.
patent: 5159660 (1992-10-01), Lu et al.
patent: 5204872 (1993-04-01), Staib et al.
DeMenthon et al, "Learned Classification of Welding Modes by a Neural Network with Acoustic Inputs", Aug. 1989.
Karsai et al, "Gas Tungsten Arc Weld Modeling Using a Mapping Network", Neural Networks , 1988, p. 341.
Barton Serge P.
Bellows James C.
Panian M. G.
Shaw Clifford C.
Westinghouse Electric Corp.
LandOfFree
Automated rotor welding processes using neural networks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automated rotor welding processes using neural networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automated rotor welding processes using neural networks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-581216