Abstract
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 °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.
| Original language | English |
|---|---|
| Pages (from-to) | 309-318 |
| Number of pages | 10 |
| Journal | International Journal of Applied Electromagnetics and Mechanics |
| Volume | 58 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2018 |
Keywords
- Electromagnetic acoustic transducer
- High-temperature environment
- Pulsed magnet
- Signal processing
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Electrical and Electronic Engineering
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Cite this
Ogata, S., Uchimoto, T., Takagi, T., & Dobmann, G. (2018). Development and performance evaluation of a high-temperature electromagnetic acoustic transducer for monitoring metal processing. International Journal of Applied Electromagnetics and Mechanics, 58(3), 309-318. https://doi.org/10.3233/JAE-180016