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Preliminary tests to design an EMAT with pulsed electromagnet for high temperature
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Hernandez-Valle, Francisco and Dixon, S. (2009) Preliminary tests to design an EMAT with pulsed electromagnet for high temperature. AIP Conference Proceedings (No.1096). pp. 936-941. doi:10.1063/1.3114358 ISSN 0094-243X.
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Official URL: http://dx.doi.org/10.1063/1.3114358
Abstract
Electromagnetic Acoustic Transducers (EMATs) typically make use of permanent magnets since they provide high magnetic fields with a compact size. For high temperatures, the relatively low Curie point of suitable magnets is a disadvantage (e.g. 100-150 degrees C in NdFeB). An alterative approach is to employ an electromagnet, which can be used at elevated temperatures without cooling. Large power supplies and cooling are required for DC current electromagnets capable of producing magnetic flux densities comparable to NdFeB magnets. If one uses a pulsed current electromagnet, synchronous to the excitation current of the EMAT coil, the high field can be obtained with a relatively low duty cycle and insignificant heating of the coil. We present the preliminary results in the design of an EMAT, intended for high temperature operation using a pulsed electromagnet.
| 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 |
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| Library of Congress Subject Headings (LCSH): | Electromagnets, High temperatures, Magnetic fields | ||||
| Journal or Publication Title: | AIP Conference Proceedings | ||||
| Publisher: | American Institute of Physics | ||||
| ISBN: | 978-0-7354-0629-2 | ||||
| ISSN: | 0094-243X | ||||
| Editor: | Thompson, DO and Chimenti, DE | ||||
| Official Date: | 2009 | ||||
| Dates: |
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| Number: | No.1096 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 936-941 | ||||
| DOI: | 10.1063/1.3114358 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Description: | Proceedings of 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, University of Chicago, Chicago, IL, 20-25 Jul 2008 |
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| Conference Paper Type: | Paper | ||||
| Type of Event: | Conference |
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