Infrared thermal imaging system as a diagnostic tool for gas turbine engine faults

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Proceedings titleProceedings of the ASME Turbo Expo
ConferenceASME 1994 International Gas Turbine and Aeroengine Congress and Exposition, GT 1994, 13 June 1994 through 16 June 1994
SubjectAircraft engines; Engines; Infrared imaging; Infrared radiation; Marine engines; Program diagnostics; Software testing; Thermography (imaging); Diagnostic techniques; Experimental installations; Gas turbine performance; Indirect measurements; Infrared thermal imaging systems; Measurement of temperature; National Research Council of Canada; Non-intrusive sensors; Gas turbines
AbstractWith the cost of maintaining a fleet of gas turbine engines continuing to rise, there is a greater need to develop methods to diagnose engine deterioration and identify faulty engine components quickly and efficiently. The Structures, Materials and Propulsion Laboratory of the National Research Council of Canada (NRC) has established a program to develop and evaluate various diagnostic techniques. The effort is aimed at investigating the effects of typical in-service faults on engine performance characteristics. An important aspect of the engine test program is the evaluation of non-intrusive sensors to accurately measure gas turbine performance. Using infrared thermography, the measurement of temperature is accomplished non-intrusively using the infrared radiation spectra. This instrumentation provides an indirect measurement of temperature and does not interfere with the flow field being leisured. The temperature patterns can be used to determine engine health, and identify possible fault conditions within the hot section of the engine. This paper describes the project objectives, the experimental installation, and the results of the performance evaluations. A description of the infrared thermography system, and the data reduction and analysis systems used to convert infrared light into temperature profile contours is given. Copyright © 1994 by ASME.
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AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Aerospace Research
Peer reviewedYes
NPARC number21275133
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