ArticleSensors (Basel, Switzerland)2022
Model of Magnetically Shielded Ferrite-Cored Eddy Current Sensor.
Article in Sensors (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Analytical Impedance Model of T-II Composite-Core ECT Probe Using Truncated Region Eigenfunction Expansion.Sensors (Basel, Switzerland) · 2026Article
- Determining the Impedance of an Eddy Current Probe Placed over a Defect-Free Conductive Cylinder with a Centred Circular Hole.Materials (Basel, Switzerland) · 2026Article
- Reducing noise levels in eddy current measurements using self-differential probes of the substrate conductivity under a layer of conductive coating in moved objects.Scientific reports · 2026Article
- Measurement and Calculation of the Impedance of an Eddy Current Probe Placed Above a Disc with Two Layers of Different Diameters.Materials (Basel, Switzerland) · 2025Article
- Evaluation of the Properties of Eddy Current Sensors Based on Their Equivalent Parameters.Sensors (Basel, Switzerland) · 2023Article
- Computation of Eigenvalues and Eigenfunctions in the Solution of Eddy Current Problems.Sensors (Basel, Switzerland) · 2023Article
- Eddy Current Testing of Conductive Coatings Using a Pot-Core Sensor.Sensors (Basel, Switzerland) · 2023Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
Computationally fast electromagnetic models of eddy current sensors are required in model-based measurements, machine interpretation approaches or in the sensor design phase. If a sensor geometry allows it, the analytical approach to the modeling has significant advantages in comparison to numerical methods, most notably less demanding implementation and faster computation. In this paper, we studied an eddy current sensor consisting of a transmitter coil with a finitely long I ferrite core, which was screened with a finitely thick magnetic shield. The sensor was placed above a conductive and magnetic half-layer. We used vector magnetic potential formulation of the problem with a truncated region eigenfunction expansion, and obtained expressions for the transmitter coil impedance and magnetic potential in all subdomains. The modeling results are in excellent agreement with the results using the finite element method. The model was also compared with the impedance measurement in the frequency range from 5 kHz to 100 kHz and the agreement is within 3% for the resistance change due to the presence of the half-layer and 1% for the inductance change. The presented model can be used for measurement of properties of metallic objects, sensor lift-off or nonconductive coating thickness.
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Registered trials
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