Superminiature Eddy-Current Transducers for Studying Steel to Dielectric Junctions


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We applied eddy current transducer (ECT) to examine the electric steel parameters. The research topic is considered relevant due to the need for evaluation and forecasting of safe operating life of electric steel products. A scheme that uses a computer as a generator and receiver of signals from windings is proposed. Having the designed transducer as a basis, a hardware-software complex was built to perform experimental studies of steel at the interface boundary. The article provides the key technical information about the eddy current transformer used and describes the methodology of measurements that makes it possible to control steel to dielectric transition. Test results are reported for a specimen with continuous and discrete measurements taken at different frequencies. The curve of introduced voltage amplitude as a function of sensor location was constructed to study in details the introduced voltage drop at the ferromagnetic-dielectric interface. Presentation of induced voltage changes in the form of mathematical dependences enables to elicit the ways of interaction between electromagnetic field of eddy-current converter and residual magnetic field of steel.



Edited by:

Dr. Dmitry A. Chinakhov




S. Dmitriev et al., "Superminiature Eddy-Current Transducers for Studying Steel to Dielectric Junctions", Materials Science Forum, Vol. 927, pp. 161-167, 2018

Online since:

July 2018




[1] R. Kuzeev, Electromagnetic Diagnostics of Equipment at Petrochemical and Oil Refining Enterprises, UGNTU, Ufa, (2001).

[2] О.G. Kondrashova, Determination of Safe Operating Life of Oil and Gas Equipment by Estimating the Adaptive Properties of Metal on Changing its Magnetic Characteristics, PhD thesis, UGNTU, Ufa, (2006).

[3] V.S. Ivanova, Fracture of Metals, Metallurgiya, Moscow, (1979).

[4] J. Pesicka, R. Kuzel, A. Dronhofer, G. Eggeler, The evolution of dislocation density during heat treatment and creep of tempered martensite ferritic steels, Acta Mater. 51 (2003) 4847–4862.


[5] I. Tomáš, O. Kovářík, G. Vértesy, J. Kadlecová, Nondestructive indication of fatigue damage and residual lifetime in ferromagnetic construction materials, Meas. Sci. and Tech. 25 (2014) 1-10.


[6] A.V. Egorov, S.V. Kucheryavskiy, V.V. Polyakov, Resolution of effects in multi-frequency eddy current data for reliable diagnostics of conductive materials, Chemom. and Intell. Labor. Syst. 160 (2017) 8-12.


[7] R. Ghoni, M. Dollah, A. Sulaiman, F.M. Ibrahim, Defect characterization based on eddy current technique: Technical review, Adv. in Mech. Eng. 6 (2015) 1-11.

[8] D. Rifai, A. N. Abdalla, N. Khamsah, M. Aizat, M. Fadzli, Subsurface defects evaluation using eddy current testing, Indian Journal of Science & Technology. 9(9) (2016) 1-7.


[9] J.M. Szlagowska-Spychalska, M.M. Spychalski, K.J. Kurzydlowski, A novel approach for measuring of thickness of induction hardened layers based on the eddy current method and the finite element modeling, NDT E. Int. 54 (2013) 56-62.


[10] G. Almeida, J. Gonzalez, L. Rosado, P. Vilaça, T.G. Santos, Advances in NDT and materials characterization by eddy currents, Procedia CIRP. 7 (2013) 359-364.


[11] D. Rifai, A.N. Abdalla, Defect signal analysis for nondestructive testing, ARPN J. Eng. Appl. Sci. 11 (2015) 1-14.

[12] A. N. Abdalla, R. Razali, K. Ali, M. A. Faraj, An eddy current testing platform system for pipe defect inspection based on an optimized eddy current technique probe design, Sensors (Basel). 17(3) (2017) 1-24.


[13] S.F. Dmitriev, V.N. Malikov, A.M. Sagalakov, A.V. Ishkov, A.O. Katasonov, Research of aluminum alloys with using eddy-current transducers on the basis of cores of various form, IOP Conf. Ser.: Mater. Sci. Eng. 289 (2017) 1-7.


[14] S.F. Dmitriev, V.N. Malikov, A.M. Sagalakov, A.V. Ishkov, A.O. Katasonov, Subminiature eddy-current transducers for conductive materials and layered composites research, Advances in Intelligent Systems and Computing. 692 (2017) 655-665.


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