Hernandez-Valle, Francisco and Dixon, S. (2011) Pulsed electromagnet EMAT for ultrasonic measurements at elevated temperatures. Insight - Non-Destructive Testing and Condition Monitoring, Vol.53 (No.2). pp. 96-99. doi:10.1784/insi.2011.53.2.96 ISSN 1354-2575.

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Abstract

Typically, permanent magnets are used in electromagnetic acoustic transducer (EMAT) design. Their use at high temperatures without active cooling is restricted because of their relatively low maximum operating temperature. Presented here is an alternative approach that overcomes this problem and that utilises a pulsed electromagnet and a ceramic encapsulated EMAT coil, both able to withstand high temperatures and capable of performing sample inspections at temperatures up to 600C, without using any active cooling system. Measurements on the shear wave velocity variations and ultrasound attenuation in a low-carbon steel sample at a range of different temperatures are presented here.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH):	Electromagnets, Ultrasonics, High temperatures
Journal or Publication Title:	Insight - Non-Destructive Testing and Condition Monitoring
Publisher:	British Institute of Non-Destructive Testing
ISSN:	1354-2575
Official Date:	1 February 2011
Dates:	Date Event 1 February 2011 Published
Volume:	Vol.53
Number:	No.2
Page Range:	pp. 96-99
DOI:	10.1784/insi.2011.53.2.96
Status:	Peer Reviewed
Publication Status:	Published

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