Wavelet Package for the In-Process Monitoring of Gas Metal Arc Welding Mild Steel

摘要：

　　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.

关键词： Gas Metal Arc Welding Wavelet Package Transformation Fishers Estimation Receiver Operating Characteristic

作者: Ying-Yao Ting King-Chu Hung Yih-Fong Tzeng

作者单位: Institute of Engineering Science and Technology, National Kaohsiung First University of Science of Technology, Taiwan;Dept.Information Management, Wu Feng University of Science of Technology, Taiwan; Dept.Computers and Communication Engineering, National Kaohsiung First University of Science of Technology, Taiwan; Dept.Mechanical and Automation Engineering, National Kaohsiung First University of Science of Technology, Taiwan

会议类型: 国际会议

会议名称: the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

会议地点: 台湾

会议语种:英文

页码: 3652-3656

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）