Analysis of the Effect of Excitation and Specimen Electromagnetic Parameters on Pulsed Eddy Current Testing Signal with Simulation Method
摘 要
脉冲涡流检测技术已成功应用于带包覆层容器和管道壁厚检测。然而,由于铁磁性材料脉冲涡流检测机理的复杂性,目前缺乏对检测信号影响因素的有效分析方法。首先利用有限元仿真方法建立了脉冲涡流检测模型,并用试验验证了模型的正确性;然后研究了重复频率、占空比及边沿斜率等激励参数对检测信号的影响,为脉冲涡流检测激励模式的选择提供参考;最后分析了试件电磁参数对检测信号的影响,为脉冲涡流检测结果的解释提供依据。
Abstract
Pulsed eddy current(PEC) testing technology has been successfully used to wall thickness measurement of coating vessels and pipes. However, due to the complexity of PEC testing theory of ferromagnetic materials, currently an effective method for analyzing the influence factors on PEC testing signal is still lacking. At first, a PEC testing model is established with finite element simulation method and verified by experiment. Then the effects of the excitation parameters including repetition frequency, duty cycle and edge slope are studied, which can provide a reference for determining the PEC excitation mode. At last, the effect of the specimen electromagnetic parameters on testing signal is analyzed and the basis for interpretation of PEC testing results is provided.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目 国家“十一五”科技支撑计划资助项目(2006BAK02B02)
收稿日期 2010/7/13
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备注徐志远(1984 -),男,博士研究生,主要研究方向为脉冲涡流检测原理与方法。
引用该论文: XU Zhi-Yuan,WU Xin-Jun,HUANG Chen,KANG Yi-Hua. Analysis of the Effect of Excitation and Specimen Electromagnetic Parameters on Pulsed Eddy Current Testing Signal with Simulation Method[J]. Nondestructive Testing, 2011, 33(6): 1~4
徐志远,武新军,黄琛,康宜华. 激励参数和试件电磁参数对脉冲涡流检测影响的仿真分析[J]. 无损检测, 2011, 33(6): 1~4
被引情况:
【1】李勇,齐勇,陈振茂,李红梅, "基于脉冲涡流差分信号提离交汇点的亚表面层材质劣化检测技术理论研究",无损检测 34, 1-5(2012)
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