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Advanced Probe Models Based on Magnetic Dipoles and Ferrite Cores

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Computational Electromagnetics and Model-Based Inversion

Part of the book series: Scientific Computation ((SCIENTCOMP))

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Abstract

By a “nonstandard probe,” we mean one that is not the usual air-core circular coil with a square cross-section, whose axis is normal to a plane surface, as in the pancake coil of Appendix A.1 of Chap. 5, or with its axis coinciding with the axis of a tube, as in the bobbin coils of Chap. 9. In this chapter, we develop a theory that allows us to efficiently discretize the current density in such probes, thereby allowing us to use transfer matrices (these will be discussed in Chap. 10) and similar mathematical constructs for solving problems.

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Notes

  1. 1.

    This will be fully explained in Chap. 12.

  2. 2.

    These data were supplied by David Forsyth and Mark Keiser of Texas Research Institute Austin.

References

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  4. Murphy, K., Sabbagh, H.A. Treece, J.C.: Verification of a model of eddy-current probes with ferrite cores. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation, vol. 13, pp. 1089–1093. Plenum Press, New York (1994)

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Sabbagh, H.A., Murphy, R.K., Sabbagh, E.H., Aldrin, J.C., Knopp, J.S. (2013). Advanced Probe Models Based on Magnetic Dipoles and Ferrite Cores. In: Computational Electromagnetics and Model-Based Inversion. Scientific Computation. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-8429-6_6

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