Branch pipe fillet weld surface defect detection system based on alternating current field
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摘要:
基于交流电磁场检测（ACFM）技术,开发了一套支管角焊缝表面缺陷检测系统。设计了包含ACFM探头和便携式机箱的硬件检测系统,针对检测信号的特点开发了信号平滑滤波算法,提高了信号的信噪比,并基于LabVIEW平台编写了集信号采集、信号处理和信号显示为一体的检测软件,最后形成一套完整的交流电磁场支管角焊缝表面缺陷检测系统,并采用该系统对Q345材料角焊缝试件进行检测。试验结果表明,所设计的交流电磁场缺陷检测系统能实现支管角焊缝表面缺陷信号的有效降噪和准确识别。
Abstract:A surface defect detection system for branch pipe fillet welds was developed based on alternating current field detection (ACFM) technology. A hardware detection system including ACFM probe and portable chassis was designed, and a signal smoothing filtering algorithm was developed based on the characteristics of the detection signal to improve the signal-to-noise ratio. Based on LabVIEW software, a detection software was developed to integrate signal acquisition, signal processing, and signal display. Finally, a complete AC electromagnetic field branch corner weld surface defect detection system was formed, and the Q345 material corner weld specimen was tested using this equipment. The experimental results showed that the proposed alternating current field defect detection system can effectively reduce noise and accurately identify surface defect signals of branch pipe corner welds.
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