TY - GEN
T1 - Wavelet package for the in-process monitoring of gas metal arc welding mild steel
AU - Ting, Ying Yao
AU - Hung, King Chu
AU - Tzeng, Yih Fong
PY - 2012
Y1 - 2012
N2 - The acoustic signals were strongly related to the behavior of the arc column, the molten pool and droplet transfer in gas metal arc welding(GMAW). In this study, all the work pieces (JIS SS400) were welded at the same speed with different currents using a gas metal arc; the purpose was to observe the relationship between these factors. Using a sound capture card and microphone we collected the audio signals generated by the welding. In this paper, wavelet package transformation (WPT) decomposes the sounds signals into 128 channels within the frequency domain. The properties of the audio signals were analyzed by the wavelet-based channel energy. The ROC (Receiver Operating Characteristic) parameters, (Ac, Se, Sp, ppv, and npv), were used for classification performance evaluation. Experimental results also show that acoustic emissions are useful in the quality control of plasma arc welding.
AB - The acoustic signals were strongly related to the behavior of the arc column, the molten pool and droplet transfer in gas metal arc welding(GMAW). In this study, all the work pieces (JIS SS400) were welded at the same speed with different currents using a gas metal arc; the purpose was to observe the relationship between these factors. Using a sound capture card and microphone we collected the audio signals generated by the welding. In this paper, wavelet package transformation (WPT) decomposes the sounds signals into 128 channels within the frequency domain. The properties of the audio signals were analyzed by the wavelet-based channel energy. The ROC (Receiver Operating Characteristic) parameters, (Ac, Se, Sp, ppv, and npv), were used for classification performance evaluation. Experimental results also show that acoustic emissions are useful in the quality control of plasma arc welding.
KW - Fisher's estimation
KW - Gas metal arc welding
KW - Receiver operating characteristic
KW - Wavelet package transformation
UR - https://www.scopus.com/pages/publications/81255207320
U2 - 10.4028/www.scientific.net/AMM.121-126.3652
DO - 10.4028/www.scientific.net/AMM.121-126.3652
M3 - 会议稿件
AN - SCOPUS:81255207320
SN - 9783037852828
T3 - Applied Mechanics and Materials
SP - 3652
EP - 3656
BT - Frontiers of Manufacturing and Design Science II
T2 - 2nd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2011
Y2 - 11 December 2011 through 13 December 2011
ER -