journal article·1992-03

IMPEDANCE ANALYSIS FOR AIR-CORED CYLINDRICAL EDDY CURRENT COILS SCANNING THE SURFACES OF DEFECT-FREE CONDUCTORS

SUSAN R. OATEN, JACK BLITZ

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Abstract

Abstract Using a purely analytical method, a derivation is made of the components of the impedance of an eddy current coil of finite length scanning the surface of a defect-free electrical conduction, either non-ferromagnetic or ferromagnetic, for different frequencies, degree of lift-off, electrical conductivity and magnetic permeability. Good agreement is reached with measured values.
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Research context

OpenAlex topics: Non-Destructive Testing Techniques · Welding Techniques and Residual Stresses · Magnetic Properties and Applications

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References (7)

Show source-provided references
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