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August 25, 2025

Development of a Modular Eddy Current NDT System for Conductive Materials

Key Points

The modular eddy current NDT system effectively inspects various conductive structures, providing flexibility for different shapes.
Critical findings show that the system's design allows for real-time impedance measurement, significantly improving defect assessability.
Experimental validation combined with finite element method simulations confirmed the system's capability in detecting defects in conductive materials.
The study highlights the importance of custom fabrication and adjustable configurations for effective non-destructive testing.

Abstract

This paper presents the design, modeling, and experimental validation of a non-destructive testing (NDT) system based on Eddy Current Testing (ECT) for the inspection of various conductive structures, including hollow tubes, flat plates, and complex geometries. The system integrates a motor-driven mechanical platform, a customfabricated eddy current probe, and real-time impedance measurement using an LCR meter. Its modular architecture allows the adjustment of the probe and motion configuration depending on the specimen under test. Finite Element Method (FEM) simulations were conducted using FEMM to model electromagnetic behavior and evaluate defect detectability.

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Development of a Modular Eddy Current NDT System for Conductive Materials

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