电工技术学报  2020, Vol. 35 Issue (1): 97-105    DOI: 10.19595/j.cnki.1000-6753.tces.181586
电工理论与新技术 |
钢板电磁超声表面波的仿真分析及缺陷定量检测
刘素贞1,2, 王淑娟1,2, 张闯1,2, 金亮3, 杨庆新1
1. 省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学) 天津 300130;
2. 河北省电磁场与电器可靠性重点实验室(河北工业大学) 天津 300130;
3. 天津工业大学电工电能新技术天津市重点实验室 天津 300387
Simulation Analysis of Electromagnetic Acoustic Surface Wave of Steel Plate and Quantitative Defect Detection
Liu Suzhen1,2, Wang Shujuan1,2, Zhang Chuang1,2, Jin Liang3, Yang Qingxin1
1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin 300130 China;
2. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology Tianjin 300130 China;
3. Key Laboratory of Advanced Electrical Engineering and Energy Technology Tianjin Polytechnic University Tianjin 300387 China
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摘要 电磁超声换能器(EMAT)的换能机制与被测试材料的电磁特性密切相关,EMAT对不同电磁特性材料的响应不同。铁磁材料具有磁致伸缩效应,磁致伸缩的非线性导致其电磁超声换能机制变得复杂。该文依据铁磁材料的本构方程,考虑洛伦兹力、磁致伸缩效应和磁化力的共同作用,建立含有矩形槽裂纹钢板的电磁超声换能器有限元模型,仿真分析表面波对钢板中缺陷的响应特性,得出缺陷深度与反射系数、透射系数的关系,为钢板裂纹缺陷定量检测奠定基础。最后,对标准试件的不同深度裂纹进行实验研究,验证了仿真分析的正确性和有效性。
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刘素贞
王淑娟
张闯
金亮
杨庆新
关键词 铁磁材料电磁超声换能器表面波缺陷定量检测磁致伸缩力    
Abstract:The transduction mechanism of electromagnetic acoustic transducer (EMAT) is closely related to the electromagnetic properties of the material being tested. EMAT responds differently to the different electrical and magnetic properties of the test materials. The electromagnetic acoustic transduction mechanism of ferromagnetic materials is complicated because of its magnetostriction effect and nonlinear magnetization characteristic. Based on the constitutive equation of ferromagnetic materials, electromagnetic acoustic transducer finite element model of steel plate with rectangular flaw was established, considering lorentz force, magnetostriction effect and magnetization force simultaneously. The response characteristics of surface waves to steel defects are simulated and analyzed. The relationships between the flaw size, depth and the amplitude of the reflection and transmission waves were obtained, which laid a foundation for quantitative test of steel plate crack defects. Finally, experiments detecting the standard specimen with different depth defects were conducted to vertify the result of simulation analysis.
Key wordsFerromagnetic materials    electromagnetic acoustic transducer    surface wave    quantitative defect detection    magnetostrictive force   
收稿日期: 2018-09-26      出版日期: 2020-01-17
PACS: TB552  
基金资助:国家自然科学基金(51777052, 51977058)、天津市自然科学基金(16JCYBJC19000)、河北省自然科学基金(E2017202055)和河北省高校科研重点项目(ZD2018214)资助
通讯作者: 刘素贞 女,1969年生,博士,教授,博士生导师,研究方向为工程电磁场与磁技术。E-mail:szliu@hebut.edu.cn   
作者简介: 王淑娟 女,1993年生,硕士研究生,研究方向为电磁无损检测技术。E-mail:838198433@qq.com
引用本文:   
刘素贞, 王淑娟, 张闯, 金亮, 杨庆新. 钢板电磁超声表面波的仿真分析及缺陷定量检测[J]. 电工技术学报, 2020, 35(1): 97-105. Liu Suzhen, Wang Shujuan, Zhang Chuang, Jin Liang, Yang Qingxin. Simulation Analysis of Electromagnetic Acoustic Surface Wave of Steel Plate and Quantitative Defect Detection. Transactions of China Electrotechnical Society, 2020, 35(1): 97-105.
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