摘要
电磁超声换能器(EMAT)是一种通过电磁耦合方法产生和接收超声波的换能器。由于EMAT具有非接触性、无需耦合剂等优点,受到广大无损检测与评估工作者的广泛关注。从物理原理出发,介绍了EMAT过程数学建模、装置设计以及工程应用等方面的研究现状,并对其发展趋势作出了展望。
An electromagnetic acoustic transducer (EMAT) can produce and receive ultrasonic waves though electromagnetic coupling. The EMAT is characteristic of non-contact and being needing no coupling medium, so it is specially concerned by researchers on nondestructive testing and evaluation. The physical principle of EMAT was presented, and the research status of mathematics modeling, equipment design and engineering applications of EMAT were introduced.
出处
《无损检测》
2004年第6期275-279,共5页
Nondestructive Testing
关键词
电磁超声换能器
无损检测
数学模型
装置设计
Electromagnetic acoustic transducer
Nondestructive testing
Mathematic model
Equipment design
