This paper presents a methodology for monitoring the gas metal arc welding process objectively using indices developed from the statistical features of the welding current and voltage transient waveforms. Four indices are presented which give qualitative interpretation of the mode of metal transfer and also an indication of the ignition behaviour and the stability of the welding arc. To ensure robustness, the indices were combined to establish general monitoring rules for the welding process.
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References
1.
PokhodnyaI.: Automat. Weld. (USSR), 1964, 2, 1–7.
2.
AdamG. and SiewertT.: Weld. J., 1990, 69, (3), 103-s–108-s.
3.
LuiS..: in Proc. 2nd Int. Conf. on ߢRecent trends in welding science and technology, TWR’89’, Gatlingburg, TN, USA, May 1989, 475–479.
4.
SmarttH., et al.: in Proc. 2nd Int. Conf. on ‘Recent trends in welding science and technology, TWR’89’, Gatlingburg, TN, USA, May 1989, 917–921.
5.
JohnsonJ., et al.: Weld. J., 1991, 70, (4), 91-s–99-s.
6.
WangW..: Weld. J., 1995, 74, (11), 369-s–377-s.
7.
ManzF.: Weld. J., 1981, 5, 23–27.
8.
LebedevV.: IIW Doc., USSR Academy of Sciences, USSR National Welding Committee, 1979.
9.
LipeiJ..: Weld. Int., 1988, 2, (3), 263–268.
10.
LebedevV. and SidoreikoM.: Aut. Svarka, 1963, 7, 64–68.
11.
JenningsC.: Weld. J., 1951, 30, (2), 117–138.
12.
LebedevA.: Paton Weld. J., 1989, 1, (1), 36–39.
13.
ChawlaK., and NorrishJ..: in Proc. 4th Conf. on ‘Computer technology in welding’. Cambridge, UK, June 1992, TWI.
