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Computer Modeling of Pulsed Eddy-Currents in Conducting Materials for NDT Purposes

  • Reinhold Ludwig
  • Xiao-Wei Dai
  • Ramisamy Palanisamy
Chapter
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series

Abstract

The numerical modeling of single frequency eddy-current phenomena based on the magnetic vector potential has been successfully applied to many NDT applications [1–3]. Despite the considerable wealth of sinusoidal eddy-current literature, the numerical modeling of pulsed eddy-currents has received little attention. Most of the recent finite element transient eddy-current NDT modeling [4,5] employs a variational time-domain formulation for 2D and axisymmetric geometries. Since this model was tested against experimental measurements, it lacks rigorous quantitative verification required to be a useful NDT design tool.

Keywords

Finite Element Formulation Magnetic Vector Potential Axisymmetric Geometry Timken Company Polynomial Weighting Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    R. Palanisamy and W. Lord, “Finite Element Modeling of Electromagnetic NDT Phenomena,” IEFF Trans Magn., vol. MAG-16, no. 5, pp. 1083–1085, Sept. 1980.CrossRefGoogle Scholar
  2. 2.
    R. Palanisamy, “Finite Element Modeling of Eddy-Current Nondestructive Testing Phenomena,” Ph.D. dissertation, Dept. of Electrical Engineering, Colorado State University, 1983.Google Scholar
  3. 3.
    R. Palanisamy and W. Lord, “Interaction of Support Plate and Defect Eddy-Current Trajectories in Steam Generator Tubing NDT,” Mat. Fvaaivation, vol. 39, no. 7, pp. 651–655, June 1981.Google Scholar
  4. 4.
    B. L. Allen, “Finite Element Modeling of Pulsed Electromagnetic NDT Phenomena,” M.S. thesis, Dept. of Electrical Engineering, Colorado State University, 1983.Google Scholar
  5. 5.
    B. Allen and W. Lord, “Finite Element Modeling of Pulsed Eddy Current Phenomena.” Rev destructive FvYu Lion, D. O. Thompson and D. E. Chimenti eds., vol. 3A, pp. 589–597, 1984.Google Scholar
  6. 6.
    D. L. Stoll, The analysis of Eddy-Currents, Clarendon Press, Oxford, England, 1974.Google Scholar
  7. 7.
    R. Ludwig and X.-W. Dai, “Numerical and Analytical Modeling of Pulsed Eddy-Currents in a Conducting Half-Space,” to appear in IEEE Trans. Magn.Google Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Reinhold Ludwig
    • 1
  • Xiao-Wei Dai
    • 1
  • Ramisamy Palanisamy
    • 2
  1. 1.Department of Electrical EngineeringWorcester Polytechnic InstituteWorcesterUSA
  2. 2.Timken ResearchThe Timken CompanyCantonUSA

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