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Parametric Sizing of Tube Wall Thickness from Multi-Frequency Remote Field Eddy Current Signals
S. Thirunavukkarasu, B.P.C. Rao, Manu Joseph, N. Gopalakrishnan, C.K. Mukhopadhyay, T. Jayakumar
86 - 93
10.3233/978-1-61499-639-2-86
Studies in Applied Electromagnetics and Mechanics
Volume 41: Electromagnetic Nondestructive Evaluation (XIX)
Abstract

This paper presents a nonlinear parametric approach for simultaneous estimation of depth and length of uniform wall loss grooves from the RFEC phase signals. The nonlinear parametric equation has been arrived after detailed analysis of the model predicted RFEC phase signals of grooves of different dimensions. The performance of the approach has been validated and accurate sizing of depth of the grooves within a maximum absolute error of ±0.03 mm has been achieved.

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