Academic literature on the topic 'Eddy current resistance'

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Journal articles on the topic "Eddy current resistance"

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Matsumura, Noriaki, Hiroshi Machida, and Takafumi Nakahara. "Equivalent Resistance Analysis of an Eddy Current Displacement Sensor." IEEJ Transactions on Fundamentals and Materials 125, no. 4 (2005): 301–8. http://dx.doi.org/10.1541/ieejfms.125.301.

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Takahashi, Norio, Akira Akagi, Masanori Nakano, Yuhito Doi, and Daisuke Miyagi. "Examination of eddy current in laminated core without insulation." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 1/2 (2013): 95–105. http://dx.doi.org/10.1108/compel-11-2012-0330.

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Purpose – In the laminated core of transformer, motor, etc. each electrical steel sheet is usually insulated in order to reduce the eddy current loss. Raw steel sheets without insulation are sometimes used in a small core of electrical machines and electronic equipments, because the cost of iron core can be reduced if cheap steel sheets without insulation are used in the core. The purpose of the paper is to show how the contact resistance between sheets of laminated core affects the interlaminar eddy current and to show the criterion for judgment of the necessity of insulation. Design/methodol
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Pieniążek, Jacek, and Paulina Ryba. "Eddy-Current Sensor for a Tachometer." Transactions on Aerospace Research 2017, no. 2 (2017): 57–68. http://dx.doi.org/10.2478/tar-2017-0015.

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Abstract The speed of a rotor or rotors of a turbine engine is important information on its operation. Due to the specific conditions, in which the measurement is taken in a turbine engine, which in particular applies to small engines that are becoming increasingly popular in manned and unmanned aviation, the most universal detector is the detector using the phenomenon of eddy currents. This article presents the developed detector system solution. The correct operation of a detector is conditional upon the possibility to detect the presence of a blade in the detection field in a reliable manne
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Taram, Abdoulaye, Cyrielle Roquelet, Philip Meilland, et al. "Nondestructive testing of resistance spot welds using eddy current thermography." Applied Optics 57, no. 18 (2018): D63. http://dx.doi.org/10.1364/ao.57.000d63.

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Baharom, M. Z., M. Z. Nuawi, G. Priyandoko, S. M. Harris, and M. Z. Omar. "Electromagnetic Braking Using Eddy Current Resistance for Stationary Exercise Bike." Advanced Science Letters 19, no. 11 (2013): 3143–47. http://dx.doi.org/10.1166/asl.2013.5163.

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Faraj, Moneer A., Fahmi Samsuri, Ahmed N. AbdAlla, Damhuji Rifai, Kharudin Ali, and Y. Al-Douri. "Hybrid GMR/IR probe to reduce the effects of lift-off." Measurement and Control 52, no. 5-6 (2019): 588–98. http://dx.doi.org/10.1177/0020294019827336.

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Eddy current testing technique is being utilized in engineering, such as in nuclear steam pipe, aircraft and gas/oil pipeline, due to its sensitivity to small cracks and subsurface defects, immediate results, environmental friendliness, and use in examining complex sizes and shapes of substances. However, the lift-off noise due to irregular inspected materials surface, varying coating thicknesses, or movement of transducers extremely limits the implementation of eddy current testing in a non-disastrous testing which impacts the measure of defect depth on the conductive material. In this paper,
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Pasadas, Dario Jerónimo, A. Lopes Ribeiro, Tiago Jorge Rocha, and Helena Maria Geirinhas Ramos. "Remote field eddy current tube inspection using giant magneto-resistance sensors." International Journal of Industrial Electronics and Drives 1, no. 3 (2014): 167. http://dx.doi.org/10.1504/ijied.2014.064093.

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Myatt, R. L., and R. D. Pillsbury. "DC resistance and eddy current losses in the ITER conductor joint." IEEE Transactions on Appiled Superconductivity 5, no. 2 (1995): 996–99. http://dx.doi.org/10.1109/77.402718.

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Jomdecha, Cherdpong, and Isaratat Phung-On. "Analysis of Eddy-Current Measurement System for Residual Stress Assessment in Stainless Steel Grade 304." Key Engineering Materials 659 (August 2015): 623–27. http://dx.doi.org/10.4028/www.scientific.net/kem.659.623.

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The objective of this paper is an analysis of statistical discreteness and measurement capability of an eddy-current measurement system for residual stress assessment in stainless steel Grade 304 (SS304). Cylindrical specimens with 50 mm in diameter and 12 mm thickness were prepared to generate residual stress by Resistance Spot Welding at which the welding currents were set at 12, 14, and 16 kA. The eddy-current measurement system was including a probe with frequency range of 0.1 to 3 MHz and an eddy current flaw detector. They were performed by contacting the probe on the specimen. The measu
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Jiang, Lei, Xiao Zhang Zhang, Yu Jie Bai, and Chang Liang Tang. "Preliminary Experiment of CFRP Displacement Direct Measurement with Eddy Current Sensor." Applied Mechanics and Materials 241-244 (December 2012): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.3.

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Displacement and vibration can always be found during the applications of CFRP ( carbon fibe reforced polymer). So it’s quite meaningful to measure the displacement of CFRP directly. Eddy current sensor is a promising tool for this measurement. CFRP presents great heterogeneity and high anisotropy in electromagnetic properties. At the same time, it has been proved that CFRP has quite weak conductivity. All of these means great challenge to the use of eddy current sensor, as the sensitivity would be much lower compared with traditional material such as aluminum. Many experiments have been carri
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Dissertations / Theses on the topic "Eddy current resistance"

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Huo, Xi Ting (Bob). "New Model of Eddy Current Loss Calculation and Applications for Partial Core Transformers." Thesis, University of Canterbury. Electrical and Computer Engineering, 2009. http://hdl.handle.net/10092/3631.

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This thesis first explains the eddy current and the phenomenon of skin effect, where the resultant flux flows near the surface of the metal. A new flux direction perspective is created for steel laminations, from which derivations of the eddy current resistance and power losses in different directions are developed assuming uniform flux conditions. The developed method compares with a proposed theory through experimental data. The results from the comparison support the validity of the developed derivations. Two uniform flux generators and their billets construction are introduced. The power l
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Felicetti, Roberto. "Voltage Transients in the Field Winding of Salient Pole Wound Synchronous Machines : Implications from fast switching power electronics." Licentiate thesis, Uppsala universitet, Elektricitetslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434652.

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Wound Field Synchronous Generators provide more than 95% of the electricity need worldwide. Their primacy in electricity production is due to ease of voltage regulation, performed by simply adjusting the direct current intensity in their rotor winding. Nevertheless, the rapid progress of power electronics devices enables new possibilities for alternating current add-ins in a more than a century long DC dominated technology. Damping the rotor oscillations with less energy loss than before, reducing the wear of the bearings by actively compensating for the mechanic unbalance of the rotating part
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Wojda, Rafal P. "Winding Resistance and Winding Power Loss of High-Frequency Power Inductors." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1345746593.

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Zorni, Chiara. "Contrôle non destructif par courants de Foucault de milieux ferromagnétiques : de l’expérience au modèle d’interaction." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112031/document.

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La problématique étudiée est le contrôle non destructif par courants de Foucault de matériaux ferromagnétiques à l’aide d’un capteur à magnétorésistance géante (GMR). Durant ces travaux deux aspects complémentaires ont été abordés : l’un concerne la mesure expérimentale pour essayer de quantifier et de s’affranchir du bruit de structure et du champ magnétique rémanent, l’autre le développement d’un modèle numérique d’interaction. En ce qui concerne la partie expérimentale plusieurs études avec un capteur GMR qui présente un intérêt particulier en raison de sa bonne sensibilité à basses fréquen
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Book chapters on the topic "Eddy current resistance"

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"Theory of Induction Heating." In Elements of Induction Heating. ASM International, 1988. http://dx.doi.org/10.31399/asm.tb.eihdca.t65220009.

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Abstract An induction heating system consists of a source of alternating current (ac), an induction coil, and the workpiece to be heated. This chapter describes the basic phenomena underlying induction heating with respect to the interactions between the coil and the workpiece. The chapter reviews the mechanistic basis for induction heating and provides an example of eddy-current distribution in a solid bar. The chapter defines two important concepts in the technology of induction heating: equivalent resistance and electrical efficiency. The chapter concludes with a discussion of methods for determination of power requirements for a given application.
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Conference papers on the topic "Eddy current resistance"

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Wang chen, Zhao yulu, Fan jingjing, and Zhang xiaojuan. "Giant magneto resistance based eddy-current testing system." In 2014 IEEE Far East Forum on Nondestructive Evaluation/Testing (FENDT). IEEE, 2014. http://dx.doi.org/10.1109/fendt.2014.6928265.

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Mirzaei, M., B. Funieru, and A. Binder. "Analysis of contact resistance effect between magnet segments on eddy current losses." In IET 8th International Conference on Computation in Electromagnetics (CEM 2011). IET, 2011. http://dx.doi.org/10.1049/cp.2011.0040.

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Hemeida, Ahmed, and Peter Sergeant. "Analytical modeling of eddy current losses in Axial Flux PMSM using resistance network." In 2014 XXI International Conference on Electrical Machines (ICEM). IEEE, 2014. http://dx.doi.org/10.1109/icelmach.2014.6960568.

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Bodnar, Jean Luc, Abdoulaye Taram, Cyrielle Roquelet, et al. "Assessment of nugget diameter of resistance spot welding using pulse eddy current thermography." In Thermosense: Thermal Infrared Applications XL, edited by Jaap de Vries and Douglas Burleigh. SPIE, 2018. http://dx.doi.org/10.1117/12.2305080.

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Dogaru, Teodor, and Stuart T. Smith. "Detection of cracks near sharp edges by using giant magneto-resistance-based eddy current probe." In SPIE's 5th Annual International Symposium on Nondestructive Evaluation and Health Monitoring of Aging Infrastructure, edited by Ajit K. Mal. SPIE, 2000. http://dx.doi.org/10.1117/12.385029.

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Yu, Jinpeng, Yan Zhou, Mo Ni, Guojun Yang, and Lei Zhao. "Finite Element Analysis of AMB Eddy-Current Loss in HTR-PM Primary Helium Circulator." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81375.

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In the active magnetic bearing (AMB) system, the eddy current is generated during the rotation of the rotor, which brings about the AMB loss and eddy-current magnetic field. The eddy-current magnetic field will reduce the electromagnetic force and generate the resistance torque of the AMB. Basing on the AMB of the Primary Helium Circulator (PHC) in HTR-PM, two-dimensional (2D) and three-dimensional (3D) AMB models are built and analyzed with finite element analysis (FEA) in maxwell. The 2D FEA shows that the eddy-current loss and the resistance torque increase as the rotor speed increases, and
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Zuo, Lei, Brian Scully, and Samir Nayfeh. "Design of a New Type of Eddy Current Damper With Increased Damping Density." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87714.

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Eddy current dampers have advantages of no mechanical contact, high reliability and stability, but also suffer from the disadvantage of large mass and packing size. In this paper we present a new type of eddy current damper with remarkable high efficiency and compactness. Instead of orienting the magnetic field in a uniform direction, we split the magnetic field into multiple ones with alternative directions so as to reduce the electrical resistance of the eddy current loops and thus to increase the damping force. Experimental results demonstrate that an eddy current damper of 100 × 150 × 140
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Prémel, Denis, J. M. Decitre, G. Pichenot, Donald O. Thompson, and Dale E. Chimenti. "SIMULATION OF EDDY CURRENT INSPECTION INCLUDING MAGNETIC FIELD SENSOR SUCH AS A GIANT MAGNETO-RESISTANCE OVER PLANAR STRATIFIED MEDIA COMPONENTS WITH EMBEDDED FLAWS." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: Volume 30A; Volume 30B. AIP, 2011. http://dx.doi.org/10.1063/1.3591912.

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Wang, Jing, Noritaka Yusa, Hongliang Pan, Mika Kemppainen, Iikka Virkkunen, and Hidetoshi Hashizume. "Modeling of Thermal Fatigue Crack for Enhancement of Electromagnetic Nondestructive Evaluation of Nuclear Power Plant." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16033.

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The present study investigates modeling of thermal fatigue crack by the finite element method from the view point of eddy current testing. Three artificially produced thermal fatigue cracks introduced into Inconel 600 specimens are prepared. Eddy current signals are gathered by a differential type plus point probe with 25 kHz and 100 kHz. Subsequent destructive tests show the profile of these cracks. In the numerical simulation thermal fatigue crack is modeled as a region with constant width, uniform conductivity and real profile. Results of the study combining the previous study on modeling o
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Wang, Weimin, Huajin Shao, Xing Shao, and Kailiang Song. "Investigation on the Turbine Blade Tip Clearance Measurement and Active Clearance Control Based on Eddy Current Pulse-Trigger Method." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63980.

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Blade tip clearance (BTC) measurement and active clearance control (ACC) have been and continue to be a fundamental concern in turbomachinery, which are closely bound up with the efficiency and reliability. This paper addresses the BTC measurement and ACC experimental study based on eddy current pulse-trigger method (ECPTM). And the implementation of ACC by axial displacement of the blisk is novel and this paper is the first to present the technique. The purpose of this paper is three fold. The first portion of this paper addresses the BTC measurement in different rotating speeds based on the
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