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Updated: Dec 9, 2025

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
Published on: January 16, 2020
Efficient calculation of transient eddy current response from multi-layer cylindrical conductive media
Theodoros Theodoulidis1, Anastassios Skarlatos2
1Department of Mechanical Engineering, University of Western Macedonia, Bakola and Sialvera, 50132, Kozani, Greece.
Abstract:
The transient response from a transmitter-receiver coil system inside a multi-layer cylindrical conductive configuration is obtained. The particular set-up applies to well logging as well as to eddy current tube testing. In this work, a number of improvements are presented to existing models for an efficient calculation of the induced voltage. These include: domain truncation, novel treatment of arbitrary number of layers in order to avoid computational overflows and efficient time response calculation. The latter is based on a combination of Laplace inversion techniques for short- and long-time transient responses. This article is part of the theme issue 'Advanced electromagnetic non-destructive evaluation and smart monitoring'.
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