Fast response wall pressure measurement as a means of gas turbine blade fault identification

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1991 (EN)
Fast response wall pressure measurement as a means of gas turbine blade fault identification (EN)

Loukis, E (EN)
Mathioudakis, K (EN)
Papathanasiou, A (EN)
Papailiou, K (EN)

N/A (EN)

The distortions of the pressure field around rotating blades of turbomachinery components due to alterations of their shape can be utilized for the identification of faults related to the blading. Measurement of the unsteady pressure field near the wall provides information on such flow and pressure distortions and can thus be used for diagnostic purposes. An experimental investigation of the compressor rotating blade pressure field of an industrial gas turbine has been undertaken, in order to demonstrate the feasibility of the abovementioned principle. Various realistic gas turbine blade faults have been examined. Application of the appropriate processing techniques demonstrates that unsteady pressure measurements can be used to identify the occurrence of minor blade faults (not traceable by standard techniques) as well as the kind of fault. The proposed methodology has the potential for being incorporated in a computerized engine health monitoring system. (EN)


Gas Turbine Blade Fault Identification (EN)
Rotating Blade Pressure Fields (EN)
Fault Identification (EN)
Gas Turbine (EN)
Pressure Measurement (EN)
Fast-Response Pressure Transducers (EN)
Signature Similarity Discriminants (EN)
Failure Analysis (EN)
Pressure Transducers - Applications (EN)
Blade Fault Signatures (EN)
Gas Turbines (EN)
Gas Turbines - Pressure Measurement (EN)
Computerized Engine Health Monitoring System (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Journal of Engineering for Gas Turbines and Power (EN)



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