Abstract
Using a two dimensional finite element code, the response of a U-core eddy current probe was computed for a subsurface flaw in a stainless steel medium. Next, using a three dimensional scattering model, the change in coil impedance was calculated for the same situation. From a comparison of these two results, it was concluded that the two dimensional finite element code overestimates the eddy current sensor response for the practical problem at hand by a factor of 10. This agreed well with the result obtained using an approximate technique described in this paper to estimate the true response from two dimensional calculations. Application of such desensitization factor should allow the two dimensional calculations to be effectively used in design studies.
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References
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© 1984 Plenum Press, New York
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Palanisamy, R., Thompson, R.B., Thompson, D.O. (1984). Estimates of Eddy Current Response to Subsurface Cracks from 2-D Finite Element Code Predictions. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-1194-2_54
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DOI: https://doi.org/10.1007/978-1-4684-1194-2_54
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