钢板中SH型超声导波诱导磁场分布规律研究
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- 英文论文题名：Research on magnetic field induced by Shear Horizontal guided waves in steel plate
- 论文作者：邱长春 ; 傅丹蓉 ; 李彦春 ; 林金河 ; 李振北
- 英文论文作者：QIU Chang-chun ; FU Dan-rong ; LI Yan-chun ; LIN Jin-he ; LI Zhen-bei ; China Petroleum Pipeline Inspection Technologies Co. ; Ltd. ; China Petroleum Pipeline Bureau Southeast.South Asia
- 年：2016
- 作者机构：中油管道检测技术有限责任公司;中国石油天然气管道局东南亚项目经理部;
- 论文关键词：电磁超声技术 ; 压磁效应 ; SH型超声导波
- 英文论文关键词：Electromagnetic ultrasonic technology ; Piezomagnetic effect ; Shear horizontal guided waves
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：TB55;O441.2
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：3
- 文件大小：422k
- 原文格式：D
- 会议级别：全国
摘要
由于被测介质直接参与换能而不需要额外的耦合剂,电磁超声技术日益被重视。电磁超声换能效率低,接收信号微弱,因此对电磁超声换能器进行优化设计进而提高检测信号信噪比是电磁超声技术领域的一个重要研究方向。对与接收机理,目前的研究主要集中于逆洛仑兹力机制。对于铁磁性材料,在低频时,压磁效应占据主导地位。本文针对钢板导波检测,建立了基于压磁效应的SH型超声导波诱导磁场理论,利用ANSYS软件进行了仿真。仿真结果与理论预测符合的非常好,充分证明了本文理论的正确性。
Electromagnetic technology is being paid more and more attention due to the inspected medium involved in energy transduction directly and there is no requirement for extra couplant. Electromagnetic technology has low transduction efficiency and gets weak signals. Therefore, it is a significant research direction to optimize transducer and improve signal-noise ratio in Electromagnetic technology research field. For receiving mechanism the research mainly centers on inverse Lorenz force. Piezomagnetic effect occupies the leading position in low frequency band on ferromagnetic material. For guided wave inspecting in steel plate, the paper establish the theory of Shear horizontal guided waves inducing magnetic field based on Piezomagnetic effect. Emulate is performed using ANSYS software. Emulate results are in accordance with the predicting results, which proves the validity for the theory proposed in the paper.
Electromagnetic technology is being paid more and more attention due to the inspected medium involved in energy transduction directly and there is no requirement for extra couplant. Electromagnetic technology has low transduction efficiency and gets weak signals. Therefore, it is a significant research direction to optimize transducer and improve signal-noise ratio in Electromagnetic technology research field. For receiving mechanism the research mainly centers on inverse Lorenz force. Piezomagnetic effect occupies the leading position in low frequency band on ferromagnetic material. For guided wave inspecting in steel plate, the paper establish the theory of Shear horizontal guided waves inducing magnetic field based on Piezomagnetic effect. Emulate is performed using ANSYS software. Emulate results are in accordance with the predicting results, which proves the validity for the theory proposed in the paper.
引文
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[2]康磊,用于铝板检测的电磁超声换能器优化设计技术研究(D).博士学位论文,哈尔滨工业大学,2010.Kang Lei,Research on optimal design technique of guided wave EMATS for aluminum plate inspection(D).Doctor degree thesis,Harbin Institute of Technology,2010.
[3]Hirao M,Ogi H.Emats for science and industry noncontacting ultrasonic measurements[M].Boston:Kluwer Academic Publishers.2003.
[4]Beissner R E.Electromagnetic-Acoustic Transucers:A Study of the State of the Art[R].Southwest Research Institute,Report NTIAC-76-1,1976.
[5]Maxfield B W,Fortunko C M.The Design and Use of Electromagnetic Acoustic Wav Transducers(EMATs)[C].Mater.Eval,41:1399-1408,1983.
[6]Thompson R B,Physical Principles of Measurements with EMAT Transducers[J].Physical Acoustics,19:157-200,1990.