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An Eddy Current Method for Flaw Characterization from Spatially Periodic Current Sheets

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Review of Progress in Quantitative Nondestructive Evaluation

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Abstract

Early NDE research primarily focused on the ability to develop techniques which could detect flaws in structures. Eddy currents, induced by exciting coil probes placed over a structure, were found to be a valuable tool in detecting flaws in conducting materials. In recent years, efforts have been expanded from the detection of defects to a more quantitative characterization of flaws. In metallic structures, the important flaw characteristics consist of the flaw’s depth, position, size, shape, and material properties (flaw electrical conductivity, magnetic permeability etc.). This paper continues our efforts of the past two years to recover flaw characteristics from eddy current data.

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References

  1. S. M. Nair, J. H. Rose, and V. G. Kogan, in Review of Progress in Quantitative NDK, edited by D. O. Thompson and D. E. Chimenti, ( Plenum Press, New York, 1988 ), Vol. 7A, pp. 461–469.

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  2. S. M. Nair and J. H. Rose, in Review of Progress in Quantitative NDE, edited by D. O. Thompson and D. E. Chimenti, ( Plenum Press, New York, 1989 ), Vol. 8A, pp. 313–320.

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  3. B. A. Auld, F. G. Muennemann, and M. Riaziat, in Research Techniques in Nondest,rurtive Testing, Vol. 7, edited by R. S. Sharpe (Academic Press, London, 1984), Ch. 2.

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  4. W. S. Dunbar, J. of Nondestructive Evaluation, Vol. 7, Nos. 1/2, 43(1988).

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  5. R. L. Stoll, The analysis of eddy currents ( Clarendon Press, Oxford, 1974 ).

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  6. S. M. Nair and J. H. Rose, unpublished.

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Author information

Authors and Affiliations

  1. Center for NDE, Iowa State University, Ames, Iowa, 50011, USA

    Satish M. Nair & James H. Rose

Authors
  1. Satish M. Nair
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  2. James H. Rose
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Editor information

Editors and Affiliations

  1. Center for NDE Ames Laboratory (USDOE) and Department of Engineering Science and Mechanics, Iowa State University, 50011, Ames, Iowa, USA

    Donald O. Thompson

  2. Center for NDE and Department of Materials Science and Engineering, The Johns Hopkins University, 21218, Baltimore, Maryland, USA

    Dale E. Chimenti

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© 1990 Springer Science+Business Media New York

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Nair, S.M., Rose, J.H. (1990). An Eddy Current Method for Flaw Characterization from Spatially Periodic Current Sheets. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Review of Progress in Quantitative Nondestructive Evaluation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-5772-8_32

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  • DOI: https://doi.org/10.1007/978-1-4684-5772-8_32

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-5774-2

  • Online ISBN: 978-1-4684-5772-8

  • eBook Packages: Springer Book Archive

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