Measurement of clearances using capacitive proximity sensors in turbine rotor stator cavities

Payne, Daniel and Kanjirakkad, Vasudevan (2016) Measurement of clearances using capacitive proximity sensors in turbine rotor stator cavities. In: XXIII Biennial Symposium on Measuring Techniques in Turbomachinery, 1 - 2 September 2016, Stuttgart, Germany.

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Experimental displacement measurements are to be made using in-house designed and manufactured capacitive proximity sensors inside the Sussex Rim Seal, RiSe, Rig. Currently prototype sensors have been tested to understand the significance of measuring clearances when a sensor is responsive to both radial and axial movement of a component. The results presented here show how the signal from a sensor designed to measure displacement of a parallel target, changes as the orthogonal distance to the target is also altered. A two-sensor (orthogonal axis) approach has been adopted, calibrated and tested in a mock-up geometry. The measurement accuracy has been shown to have increased to within 0.05mm.

Item Type: Conference or Workshop Item (Paper)
Keywords: Tip clearance, Turbine, Sensor
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Thermo-Fluid Mechanics Research Centre
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ0266 Turbines. Turbomachines (General)
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Depositing User: Vasudevan Kanjirakkad
Date Deposited: 22 Sep 2016 09:55
Last Modified: 27 Apr 2020 13:40

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Project NameSussex Project NumberFunderFunder Ref
Rotor stator cavity rim seal ingestionG0792GE AVIATION20018-14016208