用于电磁超声铝板检测的脉冲电磁铁  

Pulsed Electromagnet Applied in Electromagnetic Ultrasonic Detection for Aluminium Plate

作　　者：张晓辉[1] 刘宝泉[2] 翟国富[1] 康磊[1] 

机构地区：[1]哈尔滨工业大学军用电器研究所,黑龙江哈尔滨150001 [2]西安交通大学电力电子与新能源研究中心,陕西西安710049

出　　处：《低压电器》2010年第15期1-5,共5页Low Voltage Apparatus

基　　金：国防科技工业技术基础科研项目(B1220102302)

摘　　要：电磁超声换能器是一种新型超声波发射和接收装置。通过建模、有限元分析、电路仿真等多种方法,设计了一种结构简单、实用性强的用于电磁超声铝板检测的脉冲电磁铁。该脉冲电磁铁由脉冲电流激励,工作时瞬间建立较强磁场,工作结束后磁场迅速消失,从而使电磁超声装置的体积、重量显著降低。最后,结合铝板厚度测量实验,验证了脉冲电磁铁设计方法的有效性。Electromagnetic acoustic transducer（EMAT） was a new ultrasonic transmitting and receiving de-vice.A pulsed electromagnet with simple structure which could be applied in electromagnetic ultrasonic aluminum plate detection was designed.Many methods had been used in this design,such as finite element analysis,model-ing,circuit simulation and so on.Pulsed electromagnet excited by pulsed current could create large magnetic flux density when EMAT worked and switched off when the detection was over,thus the problems above were solved.Finally,through an electromagnetic ultrasonic aluminum thickness gauge experiment,the validity of this pulsed e-lectromagnet was verified.

关 键 词：电磁超声换能器 脉冲电磁铁 建模仿真 

分 类 号：TM503.1[电气工程—电器]