| 电磁超声换能器的阻抗测试方法研究 |
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| 引用本文： | 雷华明,阙沛文. 电磁超声换能器的阻抗测试方法研究[J]. 仪表技术与传感器, 2004, 0(1): 15-16 |
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| 作者姓名： | 雷华明 阙沛文 |
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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自动检测研究所,上海,200030 |
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| 基金项目： | 国家"十五"863课题(2001AA602021)资助 |
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| 摘 要： | 电磁超声换能器(Electromagnetic Acoustic Transducer,EMAT)由于其诸多的优点,逐渐被无损检测界所采用。设计其相应的电路对换能器的特性应有足够的认识。介绍了一种简单的EMAT阻抗测试方法,它无需用高质量的阻抗测量仪,就可测得EMAT的电抗(感抗或容抗)和电阻。
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| 关 键 词： | 电磁超声换能器 阻抗测试 无损检测 EMAT |
| 文章编号： | 1002-1841(2004)01-0015-02 |
| 修稿时间： | 2003-09-20 |
Method for Measuring EMAT Impedance |
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| LEI Hua-ming,QUE Pei-wen. Method for Measuring EMAT Impedance[J]. Instrument Technique and Sensor, 2004, 0(1): 15-16 |
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| Authors: | LEI Hua-ming QUE Pei-wen |
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| Abstract: | The increasing use of electromagnetic acoustic transducer(EMAT)in NDT has become possible due to its a good many merits.The proper design of the corresponding circuit requires sufficient knowledge about the characters of the transducer.It discusses a simple circuit that will enable the reactance and resistance of an EMAT to be determined in cases where a high quality impedance measuring instrument is unavailable. |
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| Keywords: | Electromagnetic Acoustic Transducer(EMAT) Impedance Measuring NDT |
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