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Advanced Application of Eddy Current Sensors, Devices and Systems

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 3556

Special Issue Editors


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Guest Editor
Faculty of Art, Science and Technology, University of Northampton, Northampton NN1 5PH, UK
Interests: electrical conductivity; magnetic materials and magnetism; magnetic properties; conductivity; magnetic materials; magnetization; eddy current
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Electrical and Electronic Engineering, University of Manchester, Sackville Street Building, Manchester M13 9PL, UK
Interests: eddy current sensors; magnetic induction sensing, finite-element method (FEM) modeling software packages on electromagnetic (EM) analysis; measurement and instrumentation; sensors and sensing technologies; FPGA, DSP, and signal processing; tomographic imaging
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Guest editors are seeking submissions of both review and original research articles related to “Advanced Application of Eddy Current Sensors, Devices and Systems”.

As one of the most used EM NDT techniques for the evaluation of metals, ECT plays an important role in numerous industries, particularly in the rail, aerospace, petrochemical, nuclear, and transportation sectors. Applications of ECT include the detection of surface or near-surface defects, measurement of thickness, electrical conductivity, and magnetic permeability of austenitic and ferromagnetic metals.

Conductive samples affect the electromagnetic field generated by coils with alternating induced currents. Referring to eddy current effects, materials with different properties (for example, magnetic permeability, electrical conductivity, thickness) result in different secondary electromagnetic fields (influenced by the eddy current) and induced voltages on coils. Based on this fact, various methods have been developed to interrogate conductive samples (particularly for steels) using eddy current sensors.

The Special Issue welcomes contributions from but is not limited to the following fields: applied eddy current sensors; eddy current non-destructive testing; pulsed eddy current testing (PECT), multi-frequency eddy current testing (MECT), real-time defect detection, evaluation of metallurgical property, novel ECT probe design, etc.

Dr. Xiaobai Meng
Dr. Mingyang Lu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • eddy current testing
  • non-destructive evaluation
  • non-destructive testing
  • real-time monitoring
  • novel sensor designs

Published Papers (2 papers)

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Research

20 pages, 9918 KiB  
Article
A Flexible Eddy Current TMR Sensor for Monitoring Internal Fatigue Crack
by Fei Yang, Yuting He, Xianghong Fan, Tao Chen, Teng Zhang and Binlin Ma
Sensors 2023, 23(23), 9507; https://0-doi-org.brum.beds.ac.uk/10.3390/s23239507 - 29 Nov 2023
Viewed by 883
Abstract
This paper proposes a flexible eddy current TMR (FEC-TMR) sensor to monitor the internal crack of metal joint structures. First, the finite element model of the FEC-TMR sensor is established to analyze the influence of the sensor’s crack identification sensitivity with internal crack [...] Read more.
This paper proposes a flexible eddy current TMR (FEC-TMR) sensor to monitor the internal crack of metal joint structures. First, the finite element model of the FEC-TMR sensor is established to analyze the influence of the sensor’s crack identification sensitivity with internal crack propagation at different depths and determine the optimal location and exciting frequency of the sensor. Then, the optimal longitudinal spacing and exciting frequency of the sensor are tested by experiment. The experimental results are consistent with the simulation results, which verify the correctness of the simulation model. Finally, the experiment is carried out for internal cracks of different depths to verify that the sensor can monitor internal cracks, and the crack identification sensitivity gradually decreases with the increase in the depth of the crack from the surface. Full article
(This article belongs to the Special Issue Advanced Application of Eddy Current Sensors, Devices and Systems)
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16 pages, 7193 KiB  
Article
Reduction of Coil-Crack Angle Sensitivity Effect Using a Novel Flux Feature of ACFM Technique
by Ruochen Huang, Mingyang Lu, Ziqi Chen and Wuliang Yin
Sensors 2022, 22(1), 201; https://0-doi-org.brum.beds.ac.uk/10.3390/s22010201 - 28 Dec 2021
Cited by 1 | Viewed by 1763
Abstract
Alternating current field measurement (ACFM) testing is one of the promising techniques in the field of non-destructive testing with advantages of the non-contact capability and the reduction of lift-off effects. In this paper, a novel crack detection approach was proposed to reduce the [...] Read more.
Alternating current field measurement (ACFM) testing is one of the promising techniques in the field of non-destructive testing with advantages of the non-contact capability and the reduction of lift-off effects. In this paper, a novel crack detection approach was proposed to reduce the effect of the angled crack (cack orientation) by using rotated ACFM techniques. The sensor probe is composed of an excitation coil and two receiving coils. Two receiving coils are orthogonally placed in the center of the excitation coil where the magnetic field is measured. It was found that the change of the x component and the peak value of the z component of the magnetic field when the sensor probe rotates around a crack followed a sine wave shape. A customized accelerated finite element method solver programmed in MATLAB was adopted to simulate the performance of the designed sensor probe which could significantly improve the computation efficiency due to the small crack perturbation. The experiments were also carried out to validate the simulations. It was found that the ratio between the z and x components of the magnetic field remained stable under various rotation angles. It showed the potential to estimate the depth of the crack from the ratio detected by combining the magnetic fields from both receiving coils (i.e., the x and z components of the magnetic field) using the rotated ACFM technique. Full article
(This article belongs to the Special Issue Advanced Application of Eddy Current Sensors, Devices and Systems)
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