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Scalar potential model of eddy-current interactions with three-dimensional flaws

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Abstract

Magnetic scalar potential theory is applied to a model of eddy-current detection of a surface-breaking flaw in a conductor. A general boundary integral equation for the potential is derived first in a form suitable for numerical solution. The problem is then specialized to a flaw in a perfectly conducting half-space. A solution algorithm based on the boundary element method is outlined and demonstrated by application to a three-dimensional rectangular slot. Methods for accounting for the effects of nonvanishing skin depth are discussed.

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  1. Southwest Research Institute, 78284, San Antonio, Texas

    R. E. Beissner

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  1. R. E. Beissner
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Beissner, R.E. Scalar potential model of eddy-current interactions with three-dimensional flaws. J Nondestruct Eval 7, 15–24 (1988). https://doi.org/10.1007/BF00565773

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  • DOI: https://doi.org/10.1007/BF00565773

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