| 弹性层中的SH板波传播特性及电磁超声激励方法的研究 |
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| 引用本文： | 张志钢,阙沛文,雷华明. 弹性层中的SH板波传播特性及电磁超声激励方法的研究[J]. 传感技术学报, 2005, 18(2): 426-429 |
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| 作者姓名： | 张志钢 阙沛文 雷华明 |
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| 作者单位： | 上海交通大学,电子信息与电气工程学院,上海,200030;上海交通大学,电子信息与电气工程学院,上海,200030;上海交通大学,电子信息与电气工程学院,上海,200030 |
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| 摘 要： | 研究水平剪切波(Shear Horizontal,简称SH波)的传播特性及激励接收方法对该波在无损检测和声弹性技术范围内的工程应用有着重要的价值.首先,SH波在弹性层中传播的多模态、频散特性在文中作了详细的分析,同时重点研究了电磁超声技术在非铁磁性材料波导中产生SH波的探头结构和基础理论,并以试验的方法验证了其部分电声特性,结果表明,SH板波具有其他类型波所没有的独特特性,而电磁超声技术在SH波的激励接收方面有着很大的优势.
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| 关 键 词： | 电磁超声 SH板波 磁致伸缩 洛伦兹力 |
| 文章编号： | 1005-9490(2005)02-0426-04 |
| 修稿时间： | 2004-11-12 |
Propagation Characters of SH Wave in Elastic Plate and its Generation Methodof Electromagnetic Acoustic Transducers |
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| ZHANG Zhigang,QUE Peiwen,LEI Huaming. Propagation Characters of SH Wave in Elastic Plate and its Generation Methodof Electromagnetic Acoustic Transducers[J]. Journal of Transduction Technology, 2005, 18(2): 426-429 |
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| Authors: | ZHANG Zhigang QUE Peiwen LEI Huaming |
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| Affiliation: | Department of I nf ormation Measurement Technology and I nst ruments , S hanghai J iaotong Universit y , S hanghai 200030 , China |
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| Abstract: | The investigation of propagation characters of SH wave and its exciting and receiving method has great value for the application in NDE and acoustic-elastic techniques. Firstly, the multimode and dispersion relations are specialized. And the EMAT's structure and basis theory for SH wave generation in non-ferromagnetic materials is also researched. Some acoustic and electric characters are analyzed through experiments. The conclusions are shown that SH wave has some unique characters over other waves, and the EMAT technique is very fit for SH waves generation. |
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| Keywords: | EMAT SH plate wave magnetostriction Lorentz force |
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