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Journal articles on the topic 'Eddy-current probes'

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Published: 30 May 2022
Last updated: 31 May 2022

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1

Wells Krautkramer. "Eddy current probes." NDT International 23, no. 2 (April 1990): 118–19. http://dx.doi.org/10.1016/0308-9126(90)91980-8.

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2

Wells Krautkramer. "Eddy current probes." NDT & E International 23, no. 2 (April 1990): 118–19. http://dx.doi.org/10.1016/0963-8695(90)91091-2.

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3

Cecco, V. S., and F. L. Sharp. "Probes to overcome eddy current limitations." NDT International 22, no. 3 (June 1989): 180. http://dx.doi.org/10.1016/0308-9126(89)90072-2.

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4

Nguyen, Phuc, Van Thuy Nguyen, Binh Duong Vuong, Minh Duc Do, Dinh Truong Trinh, Tung Khanh Do, and Quang Trung Dang. "Study, design and manufacture eddy current probes for industry applications." Nuclear Science and Technology 6, no. 2 (September 24, 2021): 52–64. http://dx.doi.org/10.53747/jnst.v6i2.157.

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This study is based on the studying, designing and manufacturing of eddy current probes for industry applications. The main tasks of this study include: + Describes the overview and classification of eddy current probes (which can be classified into three categories based on the mode of operation: absolute eddy current probe, differential eddy current probe and reflect eddy current probe). + Describes the three methods of probe designing and manufacturing (including experimental, analytical and numerical designs). + Describes the designing and manufacturing of eddy current probes for industry applications, which based on experimental and analytical methods. Based on this study, we have successfully manufactured some current probes (including absolute eddy current probe, differential eddy current probe and reflect eddy current probe) for surface and tube inspections.
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5

Auld, B. A., J. C. Moulder, S. Jefferies, P. J. Shull, S. Ayter, and J. Kenney. "Eddy-Current Reflection Probes: Theory and Experiment." Research in Nondestructive Evaluation 1, no. 1 (January 1989): 1–11. http://dx.doi.org/10.1080/09349848909409462.

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6

Auld, B. A., J. C. Moulder, S. Jeffries, P. J. Shull, and S. Ayter. "Eddy-current reflection probes: theory and experiment." NDT International 23, no. 6 (December 1990): 362. http://dx.doi.org/10.1016/0308-9126(90)90927-g.

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7

Chen, Guolong, Zheng Cao, and Weimin Zhang. "A Novel Planar Differential Koch Fractal Eddy Current Probe with Parallel Wound Topological Structure." Journal of Sensors 2021 (June 16, 2021): 1–13. http://dx.doi.org/10.1155/2021/6671189.

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Flexible planar eddy current probes are widely used to detect conductive components with complex surface. In this study, topological transformation is applied to design a differential Koch coil exciting eddy current probe. Two kinds of Koch exciting coils, Koch A and Koch B , were obtained by topological transformation from a three-dimensional differential exciting eddy current probe. Finite element model simulation is conducted to visualize the differences of eddy current distributions induced by the probes and get the defect signal. A detailed comparison is made among the two kinds of Koch eddy current probes and a circular eddy current probe by experiments. The experiments demonstrate that the sensitivity of the Koch A eddy current probe is higher than that of another two probes for detecting the defect which is shorter than the size of the probe. This work provides a novel method for improving the performance of eddy current probes in the coil structure design.
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8

Kim, Young Joo, Bong Young Ahn, Ki Bok Kim, and Young Gil Kim. "Multi-Coil Eddy Current Probe for the Detection of Circumferential Cracks in Tubing." Key Engineering Materials 321-323 (October 2006): 505–8. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.505.

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Conventional eddy current bobbin probes, multi-pancake and/or rotating pancake probes, and transmit-receive eddy current probes are currently utilized in testing metal tubing. Each method has respective strengths and weaknesses. This paper proposes another eddy current probe with new features. The structure is designed to be sensitive to circumferential cracks, which are not easily detected with ordinary bobbin coil probes. The directions of the magnetic field and the eddy current around the coil were considered in design of the probe structure. Signals of these probes from the artificial defects were acquired and analyzed. Experimental results show that the developed probes are more sensitive to circumferential defects than comparable ordinary bobbin probes. In addition, the new probes are insensitive to axial defects. By employing both the new probes and ordinary bobbin probes, more reliable ECT can be performed.
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9

Yin, Wuliang, Mingyang Lu, Liyuan Yin, Qian Zhao, Xiaobai Meng, Zhijie Zhang, and A. Peyton. "Acceleration of eddy current computation for scanning probes." Insight - Non-Destructive Testing and Condition Monitoring 60, no. 10 (October 1, 2018): 547–55. http://dx.doi.org/10.1784/insi.2018.60.10.547.

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10

Mayos, M., and J. L. Muller. "Geometrically anisotropic probes: an improved eddy current technique." Journal of Nondestructive Evaluation 6, no. 2 (June 1987): 109–16. http://dx.doi.org/10.1007/bf00568889.

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11

Gong, Zhi, and Shiyou Yang. "Metamaterial-Core Probes for Nondestructive Eddy Current Testing." IEEE Transactions on Instrumentation and Measurement 70 (2021): 1–9. http://dx.doi.org/10.1109/tim.2020.3036658.

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12

NDT Technology Inc. "Eddy current unit operates up to 12 probes." NDT International 21, no. 3 (June 1988): 185. http://dx.doi.org/10.1016/0308-9126(88)90476-2.

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13

Dulcie, L. L., and T. E. Capobianco. "New standard test method for eddy current probes." NDT International 23, no. 6 (December 1990): 360. http://dx.doi.org/10.1016/0308-9126(90)90905-4.

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14

NDT Technology Inc. "Eddy current unit operates up to 12 probes." NDT & E International 21, no. 3 (June 1988): 185. http://dx.doi.org/10.1016/0963-8695(88)90288-5.

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15

Shkatov, Petr N., Gennady A. Didin, Dmitry E. Subbotin, and Andrey M. Kokurov. "Study of Interaction of Eddy Current Probes and Delamination in Multidirectional CFRP." Materials Science Forum 970 (September 2019): 305–13. http://dx.doi.org/10.4028/www.scientific.net/msf.970.305.

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This paper describes the physics of the interaction of the eddy current probe and the delamination in multidirectional carbon fiber reinforced polymer (CFDR). Currently, there is an opinion that eddy current signals obtained due to delamination in multidirectional CFRP are caused by the redistribution of the vertical eddy current arising from the excitation of eddy currents in the sample by a rectangular coil whose surface is orthogonal to the surface of the sample. The analysis performed by us shows that the possibility of creation and deformation of the vertical eddy current is very questionable, and that the observed eddy current signals associated with the delamination are most likely caused by carbon fiber plies misalignment towards the sample surface. In this paper was compare eddy-current signals from the delamination in CFRP in samples where the existence of vertical eddy current is possible in theory and in samples where this is not possible. The obtained signals had similar measurements, and this indirectly indicates the doubtfulness of the hypothesis of the delamination detection in CFRP samples due to vertical eddy current.
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16

AbdAlla, Ahmed N., Moneer A. Faraj, Fahmi Samsuri, Damhuji Rifai, Kharudin Ali, and Y. Al-Douri. "Challenges in improving the performance of eddy current testing: Review." Measurement and Control 52, no. 1-2 (November 16, 2018): 46–64. http://dx.doi.org/10.1177/0020294018801382.

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Eddy current testing plays an important role in numerous industries, particularly in material coating, nuclear and oil and gas. However, the eddy current testing technique still needs to focus on the details of probe structure and its application. This paper presents an overview of eddy current testing technique and the probe structure design factors that affect the accuracy of crack detection. The first part focuses on the development of different types of eddy current testing probes and their advantages and disadvantages. A review of previous studies that examined testing samples, eddy current testing probe structures and a review of factors contributing to eddy current signals is also presented. The second part mainly comprised an in-depth discussion of the lift-off effect with particular consideration of ensuring that defects are correctly measured, and the eddy current testing probes are optimized. Finally, a comprehensive review of previous studies on the application of intelligent eddy current testing crack detection in non destructive eddy current testing is presented.
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17

SABBAGH, HAROLD A., JOHN R. BOWLER, and L. DAVID SABBAGH. "A MODEL OF EDDY-CURRENT PROBES WITH FERRITE CORES." Nondestructive Testing and Evaluation 5, no. 1 (December 1989): 67–79. http://dx.doi.org/10.1080/02780898908952955.

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18

Derun, E. N., A. A. Kolyshkin, and R. Vaillancourt. "Signal simulator for the calibration of eddy current probes." IEEE Transactions on Magnetics 30, no. 1 (1994): 92–97. http://dx.doi.org/10.1109/20.272520.

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19

Sabbagh, H. "A model of eddy-current probes with ferrite cores." IEEE Transactions on Magnetics 23, no. 3 (May 1987): 1888–904. http://dx.doi.org/10.1109/tmag.1987.1065171.

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20

Sabbagh, H. A. "A model of eddy-current probes with ferrite cores." NDT International 22, no. 3 (June 1989): 181. http://dx.doi.org/10.1016/0308-9126(89)90089-8.

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21

Li, R. M., J. J. Zhou, and H. Y. Fang. "Finite element analysis of eddy current feed-through probes." NDT International 22, no. 3 (June 1989): 182. http://dx.doi.org/10.1016/0308-9126(89)90098-9.

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22

Sabbagh, H. A., J. R. Bowler, and L. D. Sabbagh. "A model of eddy-current probes with ferrite cores." NDT International 23, no. 6 (December 1990): 359. http://dx.doi.org/10.1016/0308-9126(90)90895-u.

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23

Cecco, V. S., and F. L. Sharp. "Transmit-receive eddy current probes for heat excharger inspection." NDT International 23, no. 6 (December 1990): 364–65. http://dx.doi.org/10.1016/0308-9126(90)90957-p.

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24

Wang, Jing, Haicheng Song, Takuma Tomizawa, Noritaka Yusa, and Yuanjin Ling. "Evaluation of detection capability of eddy current probes with stochastic decision threshold for inspecting pits on austenitic stainless steel welding." International Journal of Applied Electromagnetics and Mechanics 67, no. 1 (September 2, 2021): 19–33. http://dx.doi.org/10.3233/jae-201602.

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It is still a big challenge to calculate the probability of defect detection for inspecting pits on austenitic stainless steel welding using traditional POD models. Because we determine the decision threshold, the POD curve has a lot of changes as the decision threshold changes, there is no clear reason to insist which threshold is reasonable. This study proposes a new probability of detection (POD) model to quantitatively assess the detection capability of eddy current probes for inspecting pits on austenitic stainless steel welding. The experimental results show that the proposed model is more reasonable than traditional ones. The novel POD model was employed to analyze three eddy current probes, uniform, TR, plus-point probes on austenitic stainless steel welding. The results reveal that the uniform eddy current probe has the best detection capability for inspecting pits on among the three probes.
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25

Morozov, Maxim, and Pavel Novotný. "Evaluation of eddy current probes based on local field excitation." NDT & E International 35, no. 3 (April 2002): 147–53. http://dx.doi.org/10.1016/s0963-8695(01)00028-7.

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26

May, Philip, Erping Zhou, and Danny Morton. "Numerical modelling and implementation of ferrite cored eddy current probes." NDT & E International 40, no. 8 (December 2007): 566–76. http://dx.doi.org/10.1016/j.ndteint.2007.06.003.

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27

REPELIANTO, Ageng S., Naoya KASAI, and Kouichi SEKINO. "Investigation of the flaw detectability of Uniform Eddy Current Probes." Proceedings of Mechanical Engineering Congress, Japan 2019 (2019): J40131. http://dx.doi.org/10.1299/jsmemecj.2019.j40131.

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28

Dmitriev, S. F., A. V. Ishkov, V. N. Malikov, and A. O. Katasonov. "Investigation of aluminum alloys by using subminiature eddy current probes." IOP Conference Series: Materials Science and Engineering 510 (April 24, 2019): 012009. http://dx.doi.org/10.1088/1757-899x/510/1/012009.

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29

Bowler, J. R., H. A. Sabbagh, and L. D. Sabbagh. "The reduced impedance function for cup-core eddy-current probes." IEEE Transactions on Magnetics 25, no. 3 (May 1989): 2646–49. http://dx.doi.org/10.1109/20.24504.

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30

Bagaev, A. A., A. V. Ishkov, and V. N. Malikov. "Research of layered composites by using subminiature eddy-current probes." IOP Conference Series: Materials Science and Engineering 483 (March 20, 2019): 012049. http://dx.doi.org/10.1088/1757-899x/483/1/012049.

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31

HALCHENKO, Volodymyr. "Nonlinear surrogate synthesis of the surface circular eddy current probes." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 9 (September 5, 2019): 78–84. http://dx.doi.org/10.15199/48.2019.09.15.

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32

Theodoulidis, Theodoros P. "Model of ferrite-cored probes for eddy current nondestructive evaluation." Journal of Applied Physics 93, no. 5 (March 2003): 3071–78. http://dx.doi.org/10.1063/1.1543634.

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33

Uchanin, V. M. "Invariant efficiency parameter of eddy-current probes for nondestructive testing." Materials Science 48, no. 3 (November 2012): 408–13. http://dx.doi.org/10.1007/s11003-012-9520-z.

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34

Bowler, J. R., H. A. Sabbagh, and L. D. Sabbagh. "The reduced impedance function for cup-core eddy-current probes." NDT International 23, no. 6 (December 1990): 362. http://dx.doi.org/10.1016/0308-9126(90)90931-d.

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35

Halchenko, V. Ya, R. V. Trembovetskaya, and V. V. Tychkov. "Surface Eddy Current Probes: Excitation Systems of the Optimal Electromagnetic Field (Review)." Devices and Methods of Measurements 11, no. 2 (June 26, 2020): 91–104. http://dx.doi.org/10.21122/2220-9506-2020-11-2-91-104.

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Development of technical tools with improved metrological and operational characteristics is the actual problem of the eddy current testing. Ensuring the optimal distribution of the electromagnetic excitation field in the testing zone carries out confident detection of the defects and determination of their geometrical parameters by means of eddy current testing. The purpose of the work was to conduct an analysis of scientific and technical information in the field of eddy current testing to study of the use of electromagnetic excitation fields with a priori specified properties, as well as to generalize and systematize the accumulated experience and approaches to conduct theoretical research in this direction.A review of publications in the field of non-destructive electromagnetic testing devoted to the improvement of the excitation systems of eddy current flaw probes was carried out. The authors considered approaches in which a uniform distribution of the electromagnetic field on the control object surface was achieved by linear and non-linear optimal synthesis of excitation systems, provided the immobility of the probe relative to the testing object. Analysis of eddy current probe designs with a homogeneous excitation field created by circular, rectangular tangential and normal coils, as well as by creating a rotational excitation field was carried out. The authors studied designs of the excitation coils of probes with fields of complex configuration characterized by the original fractal geometry which can increase the probability of identifying defects that were not amenable to detection by classical probes.Studies that suggested the formation of optimal configuration fields in a given area using magnetic cores, field concentrators made of conductive materials and specially shaped screens were analyzed. The authors studied approaches to the implementation of the optimal synthesis of excitation systems of probes with uniform sensitivity in the testing zone using surrogate optimization for cases of moving testing objects taking into account the speed effect.The experience, as well as the results of theoretical studies devoted to the problem of designing eddy current probes with uniform sensitivity in the testing zone due to the uniform density distribution of the induced currents flowing in the object were generalized and systematized. As a result, the classification of probes on a number of features that characterize the excitation systems was proposed.
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36

Moulder, John, and Norio Nakagawa. "Characterizing the Performance of Eddy Current Probes Using Photoinductive Field-Mapping." Research in Nondestructive Evaluation 4, no. 1 (1992): 221–36. http://dx.doi.org/10.1080/09349849208968068.

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37

Moulder, John C., and Norio Nakagawa. "Characterizing the Performance of Eddy Current Probes Using Photoinductive Field-Mapping." Research in Nondestructive Evaluation 4, no. 4 (January 1992): 221–36. http://dx.doi.org/10.1080/09349849209409536.

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38

Choua, Yahya, Laurent Santandrea, Yann Le Bihan, and Claude Marchand. "Mesh Refinement in Eddy Current Testing With Separated T-R Probes." IEEE Transactions on Magnetics 46, no. 8 (August 2010): 2795–98. http://dx.doi.org/10.1109/tmag.2010.2045488.

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39

Chen, Zhenmao, and Kenzo Miya. "A new approach for optimal design of Eddy Current Testing probes." Journal of Nondestructive Evaluation 17, no. 3 (September 1998): 105–16. http://dx.doi.org/10.1007/bf02446114.

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40

Dziczkowski, Leszek, and Grzegorz Tytko. "A Method for Comparing the Metrological Properties of Eddy Current Probes." IEEE Transactions on Instrumentation and Measurement 70 (2021): 1–6. http://dx.doi.org/10.1109/tim.2021.3057925.

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41

Yu, Zhaohu, Fan Yang, Yuewen Fu, and Wenfeng Huang. "Investigation of Focusing Properties of Probes for Pulsed Eddy Current Testing." IEEE Sensors Journal 21, no. 23 (December 1, 2021): 26830–38. http://dx.doi.org/10.1109/jsen.2021.3121147.

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42

Zhang, Kai, Xing Jian Dai, and Xiao Zhang Zhang. "Designs of Eddy Current Sensor Probes Based on Multilayer Printed Circuit Board Technology." Applied Mechanics and Materials 190-191 (July 2012): 801–5. http://dx.doi.org/10.4028/www.scientific.net/amm.190-191.801.

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Probe characteristics are important for eddy current displacement sensors. Probes made by multilayer printed circuit board (PCB) are good at maintaining quality consistency and their axial length was short. As design principles for wired probes were not suitable for PCB probes, an analysis and design method for them was developed. In this paper, PCB probe characteristics were first analyzed with 3D eddy current field FEM software. The process was time-consuming. To increase analysis efficiency, a simplified 2D axial symmetry model was used to replace the 3D model. The analysis results were compared and their difference was small. The probe resister and inductance were compared with measurement result of a test PCB probe and they agreed well. Based on 2D model, a series of analysis was performed and basic design principles for PCB probes were obtained. Based on the principles, a new PCB probe with better performance was designed.
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43

Wu, Meixian, Dongli Zhang, and Chuanglong Wang. "A new eddy current probe with deep penetrating field trajectories for the inspection of deep cracks in metal materials." Insight - Non-Destructive Testing and Condition Monitoring 62, no. 7 (July 1, 2020): 402–7. http://dx.doi.org/10.1784/insi.2020.62.7.402.

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The detectability of deep cracks in metal materials is an important performance index of eddy current probes. However, because of the limitations of the skin effect of eddy currents, it is difficult to obtain deep crack information in materials using an ordinary probe. This paper proposes a new probe with deep penetrating field trajectories for the inspection of deep cracks. To optimise its performance, contributions of the coil radius, the pick-up position and the excitation frequency to penetration depth of eddy currents are studied. The results show that the capability of the new probe in the inspection of deep cracks is greatly improved when compared to traditional pancake probes.
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44

Cascante, Giovanni, John Vanderkooy, and Wilson Chung. "A new mathematical model for resonant-column measurements including eddy-current effects." Canadian Geotechnical Journal 42, no. 1 (February 1, 2005): 121–35. http://dx.doi.org/10.1139/t04-073.

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Wave velocity and attenuation are commonly studied in the laboratory with the resonant-column device (American Society for Testing and Materials standard), which is driven by a set of coils and magnets. This paper presents a new and robust mathematical model of the electromechanical resonant-column system. The model is used to compute various transfer functions. Eddy currents, a new source of damping identified in the resonant-column device, introduce damping proportional to the velocity of the magnets. Eddy-current damping is considered in the mathematical model. A testing program is devised to calibrate the resonant column with three aluminum probes. Experimental and theoretical results show an excellent agreement (4% maximum error). Exploratory results are presented for a dry-sand specimen. A resonant-column device is modified to demonstrate the significant effect of the induced voltage (electromotive force (EMF)) on damping ratio if tests are not based on current measurements. Free-vibration tests on aluminum specimens and a dry-sand specimen show a significant effect of the induced EMF (up to 400% increase in damping for the sand specimen). The induced voltage depends on the resonant frequency and damping of the specimen. In the case of aluminum probes, eddy-current damping represents 20–150 times the material damping of the specimen. Preliminary results on dry sand show that eddy-current damping represents up to a 15% increase in damping ratio. However, the magnitude of eddy-current damping depends on the configuration and materials used in the resonant-column device. The smaller the damping ratio of the specimen is, the more important the eddy-current damping becomes.Key words: damping, eddy currents, mechanical waves, resonant-column device, shear modulus, wave velocity.
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45

Shkatov, P. N., G. A. Didin, and A. A. Ermolaev. "INCREASING SENSITIVITY OF EDDY CURRENT NON-DESTRUCTIVE TESTING OF DELAMINATION IN CARBON-FIBER REINFORCED PLASTICS." Kontrol'. Diagnostika, no. 274 (April 2021): 28–37. http://dx.doi.org/10.14489/td.2021.04.pp.028-037.

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The paper is concerned with increasing sensitivity of eddy current nondestructive testing of most dangerous delamination in carbon-fiber reinforced plastics (CFRP). Increased sensitivity is achieved by separate registration and comparison of eddy current signals obtained from a set of stratifications of carbon fibers with the same orientation. The separation of eddy current signals is possible due to pronounced anisotropy of the electrical conductivity of the layers dominant in the direction of the fibers of the corresponding layer. Eddy-current signals are registered by eddy current probes with maximum sensitivity in a given angular direction. Prior to the scan eddy current signals of the probe are leveled on a defect-free area. The influence of the working gap on the difference between the eddy current signals of the probe is suppressed by normalizing it according to one of the signals. The analysis of the registered signals from delamination has been performed using an approximate calculation model. The reliability of the obtained results has been confirmed by comparison with experimental results and calculations using the finite element method.
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46

Zhou, Deqiang, Jun Wang, Jialong Wu, Ruizhen Yang, Hong Zhang, and Qiuju Zhang. "Investigation of rectangular differential probes for pulsed eddy current non-destructive testing." Insight - Non-Destructive Testing and Condition Monitoring 58, no. 2 (February 1, 2016): 87–100. http://dx.doi.org/10.1784/insi.2016.58.2.87.

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47

Hansen, J. "The eddy current inspection method. Part 2. The impedance plane and probes." Insight - Non-Destructive Testing and Condition Monitoring 46, no. 6 (June 1, 2004): 364–65. http://dx.doi.org/10.1784/insi.46.6.364.56389.

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48

Shu, Li, Huang Songling, and Zhao Wei. "Development of differential probes in pulsed eddy current testing for noise suppression." Sensors and Actuators A: Physical 135, no. 2 (April 2007): 675–79. http://dx.doi.org/10.1016/j.sna.2006.10.013.

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49

Shu, Li, Huang Songling, Zhao Wei, and Yu Peng. "Study of pulse eddy current probes detecting cracks extending in all directions." Sensors and Actuators A: Physical 141, no. 1 (January 2008): 13–19. http://dx.doi.org/10.1016/j.sna.2007.07.008.

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50

KOJIMA, Fumio, Nobuhiro KAWAI, Futoshi KOBAYASI, Akira NISHIMIZU, Masahiro KOIKE, and Tetsuya MATSUI. "Crack shape identification arising in eddy current testing by multi coil probes." Proceedings of The Computational Mechanics Conference 2003.16 (2003): 649–50. http://dx.doi.org/10.1299/jsmecmd.2003.16.649.

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