Development and performance evaluation of a high-temperature electromagnetic acoustic transducer for monitoring metal processing

被引：10
|
作者：
Ogata, Shohei [1 ]
Uchimoto, Tetsuya [2 ,3 ]
Takagi, Toshiyuki [2 ,3 ]
Dobmann, Gerd [4 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi, Japan
[2] Tohoku Univ, Inst Fluid Sci, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan
[3] Tohoku Univ, Univ Lyon, CNRS, ELyTMaX UMI 3757,Int Joint Unit, Sendai, Miyagi 9808577, Japan
[4] Saarland Univ, Chair NDT & Qual Assurance, Saarbrucken, Germany
来源：
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2018年 / 58卷 / 03期
基金：
日本学术振兴会;
关键词：
Electromagnetic acoustic transducer; high-temperature environment; signal processing; pulsed magnet;
D O I：
10.3233/JAE-180016
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An electromagnetic acoustic transducer (EMAT) design using an air-cored solenoid coil as a pulsed electromagnet is proposed for the high-temperature non-contact monitoring of metal processing, and the operation of a prototype device is confirmed at temperatures ranging from room temperature to 700 degrees C. The coil generates a biasing magnetic field that allows the device to overcome the Curie temperature limitations of conventional EMATs. Pulse-echo measurements on carbon steel are made at high temperatures, and the superposition of the nth compression method is used as a signal processing technique to confirm that the shear wave velocity decreases with increasing temperature, and it is verified that the EMAT can operate at high temperature.
引用
收藏
页码：309 / 318
页数：10
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