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Foreign Object Damage Identification in Turbine EnginesThis report summarizes the collective work of a five-person team from different organizations examining the problem of detecting foreign object damage (FOD) events in turbofan engines from gas path thermodynamic and bearing accelerometer sensors, and determining the severity of damage to each component (diagnosis). Several detection and diagnostic approaches were investigated and a software tool (FODID) was developed to assist researchers detect/diagnose FOD events. These approaches include (1) fan efficiency deviation computed from upstream and downstream temperature/ pressure measurements, (2) gas path weighted least squares estimation of component health parameter deficiencies, (3) Kalman filter estimation of component health parameters, and (4) use of structural vibration signal processing to detect both large and small FOD events. The last three of these approaches require a significant amount of computation in conjunction with a physics-based analytic model of the underlying phenomenon the NPSS thermodynamic cycle code for approaches 1 to 3 and the DyRoBeS reduced-order rotor dynamics code for approach 4. A potential application of the FODID software tool, in addition to its detection/diagnosis role, is using its sensitivity results to help identify the best types of sensors and their optimum locations within the gas path, and similarly for bearing accelerometers.
Document ID
20050161642
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Strack, William
(N and R Engineering and Management Services Parma Heights, OH, United States)
Zhang, Desheng
(AYT Corp. Brook Park, OH, United States)
Turso, James
(QSS Group, Inc. Cleveland, OH, United States)
Pavlik, William
(RS Information Systems, Inc. Cleveland, OH, United States)
Lopez, Isaac
(Army Research Lab. Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
March 1, 2005
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA/TM-2005-213588
E-15056
ARL-MR-0611
Report Number: NASA/TM-2005-213588
Report Number: E-15056
Report Number: ARL-MR-0611
Funding Number(s)
WBS: WBS 22-728-10-01
PROJECT: DA Proj. 1L1-61102-AF-20
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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