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Eddy current generation enhancement using ferrite for electromagnetic acoustic transduction
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Dixon, S. and Jian, X. (2006) Eddy current generation enhancement using ferrite for electromagnetic acoustic transduction. Applied Physics Letters, Vol.89 (No.19). p. 193503. doi:10.1063/1.2387125 ISSN 0003-6951.
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Official URL: http://dx.doi.org/10.1063/1.2387125
Abstract
Eddy currents are generated in an electrically conducting surface as a step in electromagnetic acoustic transduction (EAT). In eddy current testing, wire coils are often wound onto a ferrite core to increase the generated eddy current. With EAT, increased coil inductance is unacceptable as it leads to a reduction in the amplitude of a given frequency of eddy current from a limited voltage source, particularly where the current arises from capacitor discharge. The authors present a method for EAT where ferrite is used to increase the eddy current amplitude without significantly increasing coil inductance or changing the frequency content of the eddy current.
Item Type: | Journal Article | ||||
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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): | Transducers, Electric coils, Ferrites (Magnetic materials), Eddy currents (Electric), Inductance | ||||
Journal or Publication Title: | Applied Physics Letters | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0003-6951 | ||||
Official Date: | 8 November 2006 | ||||
Dates: |
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Volume: | Vol.89 | ||||
Number: | No.19 | ||||
Page Range: | p. 193503 | ||||
DOI: | 10.1063/1.2387125 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) |
Data sourced from Thomson Reuters' Web of Knowledge
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