电工技术学报  2018, Vol. 33 Issue (19): 4443-4449    DOI: 10.19595/j.cnki.1000-6753.tces.171340
电工理论与新技术 |
非铁磁材料的电磁超声接收过程数值模拟及实验研究
孙文秀1,2, 刘国强1,2, 夏慧1, 宋佳祥1,2, 夏正武1
1. 中国科学院电工研究所 北京 100190;
2. 中国科学院大学电子电气与通信工程学院 北京 101408
Numerical Simulation and Experimental Study of Electromagnetic Acoustic Transducer Receiving Process in Nonferromagnetic Material
Sun Wenxiu1,2, Liu Guoqiang1,2, Xia Hui1, Song Jiaxiang1,2, Xia Zhengwu1
1. Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China;
2. School of Electronic, Electrical and Communication Engineering University of Chinese Academy of Sciences Beijing 101408 China
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摘要 针对非铁磁金属板的缺陷检测问题,进行了电磁超声无损检测技术的数值模拟及实验研究。电磁超声换能器工作机理复杂,已有仿真大多是针对发射过程,并且被测体不含缺陷。该文研究建立了超声发射、电磁超声换能器接收的有限元模型,对被测体有无缺陷时线圈接收到的电压信号进行仿真分析。根据发射频率和超声导波的频散特性,设计并制作了回折形线圈,然后研究了线圈导体尺寸及线圈提离对电磁超声换能器性能的影响,并对有无缺陷的铝板进行了实验研究。结果表明:仿真中线圈接收到的电压信号能够反映缺陷的位置,实验结果与仿真结果相吻合。该工作对电磁超声被测试样有无缺陷时接收信号的分析和线圈设计有参考意义。
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孙文秀
刘国强
夏慧
宋佳祥
夏正武
关键词 非铁磁电磁超声换能器接收过程数值模拟    
Abstract:Aiming at defect detecting problems of the nonferromagnetic metal plate, a numerical simulation and experimental study were carried out. The working mechanism of electromagnetic acoustic transducer is complex. Existing simulations are mainly aimed at the exciting process, and the specimen has no defect. In this research, a finite element model of ultrasonic emission and electromagnetic acoustic transducer reception was established, and the induced voltage received by the coil was analyzed when there is defective or not in the specimen. According to the excitation frequency and the dispersion characteristics of ultrasonic guided wave, the meander coil was designed and fabricated. Then, the coil conductor size and the effect of coil lift-off on the performance of the electromagnetic acoustic transducer were studied. The experiment was carried out on the aluminum plate with no defect or defects. The results show that the voltage signal received by the coil can reflect the position of the defect. The experimental results are in agreement with the simulation results. The work in this paper is of great significance for the design of the coil and the analysis of the receiving signal when the test specimen with or without defects in electromagnetic acoustic transducer.
Key wordsNonferromagnetic    electromagnetic acoustic transducer    receiving process    numerical simulation   
收稿日期: 2017-09-19      出版日期: 2018-10-15
PACS: TM15  
基金资助:国家自然科学基金资助项目(51507171和61601265)
作者简介: 孙文秀 女,1992年生,博士研究生,研究方向为无损检测技术。E-mail:1124755291@qq.com;刘国强 男,1971年生,研究员,博士生导师,研究方向为多物理场探测与成像。E-mail:liuguoqiang@mail.iee.ac.cn(通信作者)
引用本文:   
孙文秀, 刘国强, 夏慧, 宋佳祥, 夏正武. 非铁磁材料的电磁超声接收过程数值模拟及实验研究[J]. 电工技术学报, 2018, 33(19): 4443-4449. Sun Wenxiu, Liu Guoqiang, Xia Hui, Song Jiaxiang, Xia Zhengwu. Numerical Simulation and Experimental Study of Electromagnetic Acoustic Transducer Receiving Process in Nonferromagnetic Material. Transactions of China Electrotechnical Society, 2018, 33(19): 4443-4449.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.171340          https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I19/4443