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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. 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 |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Engineering Faculty of Science > Physics |
| 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 |
| Date: | 8 November 2006 |
| Volume: | Vol.89 |
| Number: | No.19 |
| Page Range: | p. 193503 |
| Identification Number: | 10.1063/1.2387125 |
| Status: | Peer Reviewed |
| Access rights to Published version: | Open Access |
| References: | # C. Kittel, Introduction to Solid State Physics (Wiley, New York, 2005), p. 336. # X. Jian, S. Dixon, R. S. Edwards, and J. Reed, J. Acoust. Soc. Am. 119, 2693 (2006). # H. M. Frost, in Physical Acoustics XIV, edited by W. P. Mason and R. N. Thurston (Academic, New York, 1979), pp. 179–275. # R. B. Thompson, in Physical Acoustics XVIII, edited by R. N. Thurston and A. D. Pierce (Academic, New York, 1990), pp. 157–200. # A. Sophian, G. Y. Tian, D. Taylor, and J. Rudlin, Insight 43, 302 (2001). # K. Kawashima, J. Acoust. Soc. Am. 60, 1089 (1976). # S. Dixon and S. B. Palmer, Ultrasonics 42, 1129 (2004). |
| URI: | http://wrap.warwick.ac.uk/id/eprint/975 |
Data sourced from Thomson Reuters' Web of Knowledge
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