The Numerical Simulation Method for Electromagnetic Acoustic Technique
摘 要
电磁超声检测技术由于无需媒介以及与被测物体非接触,不但可提高检测效率,而且可将超声检测技术的应用扩展到高温、高速和在线检测。根据电磁超声传感器的工作原理,建立了基于有限元的电磁超声无损检测数值分析方法,开发了相应的计算程序,验证了其有效性。应用开发的电磁超声数值模拟程序,研究了不同激励方式对电磁超声波的影响,得到了相应超声波在均匀各向同性金属介质中的传播过程。该计算方法和程序为实际电磁超声检测中缺陷的定量和探头优化提供了手段。
Abstract
As no physical contact is necessary between the transducer and test-piece, the electromagnetic acoustic technique(EMAT) can not only improve the inspection efficiency but also extend the application area of ultrasonic NDT to the fields of a high temperature, a high speed and on-line inspection. A finite element method for the numerical simulation of electromagnetic ultrasonic testing signals was established and the corresponding numerical code was developed. In order to prove the validity of the code, propagation behaviors of ultrasonic waves excited by transducers of different structure were investigated by using the developed code. The simulation method and code provided a useful tool for the defect sizing and transducer optimization in practical application of EMAT.
中图分类号 TG115.28
所属栏目 2008远东无损检测新技术论坛优秀论文选登
基金项目 国家973资助项目(2007CB707702,2006CB601206);国家自然科学基金资助项目(50677049);教育部新世纪人才资助项目
收稿日期 2008/6/25
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备注裴翠祥(1984-), 男,硕士研究生,从事无损检测研究。
引用该论文: PEI Cui-Xiang,CHEN Zhen-Mao. The Numerical Simulation Method for Electromagnetic Acoustic Technique[J]. Nondestructive Testing, 2008, 30(9): 603~607
裴翠祥,陈振茂. 电磁超声的数值模拟方法[J]. 无损检测, 2008, 30(9): 603~607
被引情况:
【1】周海强,李勇,陈振茂, "铁磁材料电磁超声无损检测数值模拟",无损检测 34, 21-24(2012)
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参考文献
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【2】Ludwig R, You Z. Numerical simulation of an electromagnetic acoustic transducer-receiver systems for NDT applications[J]. IEEE Transactions on Magnetics,1993,29(3):2081-2089.
【3】董生智,苏航.永磁体空间磁场的计算与分析[J].金属功能材料,2001,8(1):16-19.
【4】Kaltenbacher M, Ettinger K. Finite element analysis of coupled electromagnetic acoustic systems[J]. IEEE Transactions on Magnetics,1999,35(3):1610-1613.
【5】Jafari-Shapoorabadi R. Improved finite element method for EMAT analysis and design[J]. IEEE Transactions on Magnetics,2001,37(4):2821-2823.
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