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http://dx.doi.org/10.5781/JWJ.2015.33.4.24

A Study on Welding Process Algorithm through Real-time Current Waveform Analysis  

Yoon, Jin Young (Welding & join group, Kitech)
Lee, Young Min (Department of Mold and Design, Korea Polytechnic VI)
Shin, Soon Cheol (Research Center, KAPEC)
Choi, Hae Woon (Department of Mechanical and Automotive Engineering, Keimyung University)
Publication Information
Journal of Welding and Joining / v.33, no.4, 2015 , pp. 24-29 More about this Journal
Abstract
The current waveform was analysed to monitor the weld quality in real time process. The acquired current waveform was discretely analysed for the top and bottom limits of peaks as well as the pulse frequency measurement. Fast Fourier Transform was implemented in the program to monitor the pulse frequency in real time. The developed algorithm or program was tested for the validation purpose. The cross-section of weld profile was compared to the current waveform profile to correlate the monitored signal and the actual parts. Pulse frequency was also used as auxiliary tool for the quality monitoring. Based on the results, it was possible to evaluate the quality of welding by measure the current waveform profile and frequency measurement.
Keywords
MAG welding; Real time; Current; Voltage; Weld monitoring;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 Cho, S. M., Oh, D. S., Lee, H. B. and Lee, K. W., 1997, Evaluation of Arc Stability in GMAW by Arc Monitoring, Journal of KWJS, 27 (1), 8-13 (in Korean)
2 Hwang, D. S. and Gho, M. H., 2012, Development and Application of Realtime Weld Quality Monitoring System, Journal of KWJS, 30 (1), 44-50 (in Korean)
3 Kim, C. H., Kim, J. Y., Yu, H. Y. and Hong, S. H., 2007, Availability Verification of Feature Variables for Pattern Classification on Weld Flaws, Transactions of the Korean Society of Machine Tool Engineers, 16 (6), 62-70.
4 Shin, B. H. and Park, Y. D., 2009, Research Activities of the KWJS for Last 20 Years, Journal of KWJS, 27 (1), 8-13 (in Korean)
5 Cho, T. D. and Yang, S. M., 2000, A Study on On-Line Quality Monitoring Using Arc Light in Gas Metal Arc Welding, Journal of KWS, 18 (4), 82-86. (in Korean)
6 Kim, E. S., Joo, K. S., Jang, B. J. and Kang, K. Y., 2009, Detection of Defects on Welding Area Using Image Processing, The Journal of the Korea Institute of Maritime Information & Communication Sciences, 13 (5), 944-951.
7 Cho, S. M., 2003, Waveform Analysis for Quality Improvement of Arc welding in Automobile Industries, J. of KWS, 21 (7), 27-33 (in Korean)
8 Wiktorowicz, R. and Melton, G., 2013, Shielding Gas Selectrion for Controlled Dip Transfer, TWI Bulletin, May (2013. 5).