Abstract
This paper studied the arc length in pulsed GTAW of aluminum alloys by means of arc plasma spectral analysis. The intensity of Ar I spectral lines and electronic temperature T e of arc plasma were extracted to detect the change of arc length. The average T e signal in the period had a linear relationship with the arc length and was also quite sensitive to the collapse in welding seam caused by thermal accumulation. The average intensity of Ar I spectrum had better anti-jamming capability than T e , but was less sensitive than T e . Probably, analysis of these signals by synthesis could achieve a better effect on detecting the arc length.
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Yu, H., Chen, S. (2011). A Study of Arc Length in Pulsed GTAW of Aluminum Alloy by Means of Arc Plasma Spectrum Analysis. In: Tarn, TJ., Chen, SB., Fang, G. (eds) Robotic Welding, Intelligence and Automation. Lecture Notes in Electrical Engineering, vol 88. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19959-2_27
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DOI: https://doi.org/10.1007/978-3-642-19959-2_27
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-19958-5
Online ISBN: 978-3-642-19959-2
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