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Single-Coil Eddy Current Sensors and Their Application for Monitoring the Dangerous States of Gas-Turbine Engines

Institute for the Control of Complex Systems of Russian Academy of Sciences, Samara 443020, Russia
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Sensors 2020, 20(7), 2107; https://doi.org/10.3390/s20072107
Received: 16 March 2020 / Revised: 27 March 2020 / Accepted: 6 April 2020 / Published: 8 April 2020
(This article belongs to the Special Issue Eddy Current Sensor)
The creation and exploitation of gas turbine engines (GTE) often involve two mutually exclusive tasks related to ensuring the highest reliability while achieving a good economic and environmental performance of the power plant. The value of the radial clearance between the blade tips of the compressor or turbine and the stator is a parameter that has a significant impact on the efficiency and safety of the GTE. However, the radial displacements that form tip clearances are only one of the components of the displacements made by GTE elements due to the action of power loads and thermal deformations during engines’ operation. The impact of loads in conjunction with natural aging is also the reason for the wear of the GTE’s structural elements (for example, bearing assemblies) and the loss of their mechanical strength. The article provides an overview of the methods and tools for monitoring the dangerous states of the GTE (blade tips clearances, impellers and shafts displacements, debris detecting in lubrication system) based on the single-coil eddy current sensor, which remains operational at the temperatures above 1200 °C. The examples of practical application of the systems with such sensors in bench tests of the GTE are given. View Full-Text
Keywords: gas-turbine engine; blade tips; radial clearance; displacement measurement; bearing assembly; oil debris monitoring; single-coil eddy current sensor; measuring system; test bench; experimental studies gas-turbine engine; blade tips; radial clearance; displacement measurement; bearing assembly; oil debris monitoring; single-coil eddy current sensor; measuring system; test bench; experimental studies
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MDPI and ACS Style

Borovik, S.; Sekisov, Y. Single-Coil Eddy Current Sensors and Their Application for Monitoring the Dangerous States of Gas-Turbine Engines. Sensors 2020, 20, 2107. https://doi.org/10.3390/s20072107

AMA Style

Borovik S, Sekisov Y. Single-Coil Eddy Current Sensors and Their Application for Monitoring the Dangerous States of Gas-Turbine Engines. Sensors. 2020; 20(7):2107. https://doi.org/10.3390/s20072107

Chicago/Turabian Style

Borovik, Sergey, and Yuriy Sekisov. 2020. "Single-Coil Eddy Current Sensors and Their Application for Monitoring the Dangerous States of Gas-Turbine Engines" Sensors 20, no. 7: 2107. https://doi.org/10.3390/s20072107

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