电磁超声导波在铝板中的传播方向控制
Propagation Direction Control of Electromagnetic Ultrasonic Guided Wave in Aluminum Plate
摘 要
针对铝板中电磁超声导波主声束传播方向控制的问题，采用毕奥萨伐尔定律等效模型分析方法，建立了非对称斜向曲折型线圈与电磁超声导波主声束传播方向的关系，试验验证了曲折型线圈的斜向角度与电磁超声导波主声束传播方向控制方法的可行性。结果表明：斜向曲折型线圈结构电磁超声换能器产生的超声导波主声束方向垂直于线圈工作导线，通过改变线圈的斜向角度，可实现超声导波传播方向的控制。
非对称斜向曲折型线圈
毕奥萨伐尔定律
主声束
electromagnetic ultrasonic transducer
asymmetric oblique zigzag coil
Bio-Sawal law
main acoustic beam
Abstract
Aiming at the control of the propagation direction of the main acoustic beam of electromagnetic ultrasonic guided wave in the aluminum plate, the equivalent model analysis method of Biot Savart law was adapted. The relationship between the asymmetric oblique tortuous coil and the propagation direction of the main beam of the electromagnetic ultrasonic guided wave was established. The experiment verified the feasibility of the oblique angle of the zigzag coil and the control method of the propagation direction of the main beam of the electromagnetic ultrasonic guided wave. Results show that ultrasonic guided wave generated by the electromagnetic ultrasonic transducer with oblique tortuous coil structure is perpendicular to the working wire of the coil. The control of the direction of propagation can be realized by changing the oblique angle of the coil.
中图分类号 TG115.28 DOI 10.11973/wsjc201812010
所属栏目 超声导波检测技术应用专题
基金项目 科技部国家重大仪表专项（2012YQ090175）
收稿日期 2018/7/5
修改稿日期
网络出版日期
作者单位点击查看
备注邢燕好(1978-),男,讲师,主要从事超声检测技术及相关理论研究
引用该论文: XING Yanhao,YANG Lijian,ZHANG Jia,GAO Songwei. Propagation Direction Control of Electromagnetic Ultrasonic Guided Wave in Aluminum Plate[J]. Nondestructive Testing, 2018, 40(12): 47～50
邢燕好,杨理践,张佳,高松巍. 电磁超声导波在铝板中的传播方向控制[J]. 无损检测, 2018, 40(12): 47～50
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参考文献
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【4】KANG Lei, DIXON S, WANG Kaican, et al. Enhancement of signal amplitude of surface wave EMATs based on 3-D simulation analysis and orthogonal test method[J]. NDT&E International, 2013(59):11-17.
【5】ZHAI Guofu, JIANG Tao, KANG Lei. Analysis of multiple wavelengths of Lamb waves generated by meander-line coil EMATs[J]. Ultrasonics, 2014(54):632-636.
【6】杨理践,李春华,高文凭,等.铝板材电磁超声检测中波的产生与传播过程分析[J]. 仪器仪表学报,2012,33(6):1218-1223.
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【9】WANG Shunjuan, LI Zhaichao, LI Pengzhan, et al. Numerical and experimental evaluation of the receiving performance of meander-line coil EMATs[J]. Nondestructive Testing and Evaluation, 2014, 29(4):269-282.
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