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6 April 1993 Adaptive control of arc welding using infrared sensing
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Infrared thermography was employed to identify changes in plate thickness during the arc welding of steel plates. The step changes in plate thickness were found to uniquely affect the surface temperature distributions of the plates during the welding process. A technique was developed to identify the thermal profile irregularities ahead of the weld that were indicative of changes in plate thickness. The results of this investigation suggest that the calculation of the area under the linescan can be successfully used to identify thickness variations in a plate as it is being welded. The gradient of the area beneath the linescan was further found to be indicative of changes in plate thickness.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Suresh Raghavan, H. C. Wikle III, and Bryan A. Chin "Adaptive control of arc welding using infrared sensing", Proc. SPIE 1933, Thermosense XV: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (6 April 1993);


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