New Sensors and Techniques for the Structural Health Monitoring of Propulsion Systems

The ability to monitor the structural health of the rotating components, especially in the hot sections of turbine engines, is of major interest to aero community in improving engine safety and reliability. The use of instrumentation for these applications remains very challenging. It requires senso...

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Bibliographic Details
Published in:TheScientificWorld 2013-01, Vol.2013 (2013), p.1-10
Main Authors: Matthews, Bryan, Oza, Nikunj, Abdul-Aziz, Ali, Woike, Mark
Format: Article
Language:English
Subjects:
Aeronautics
Air safety
Aircraft engines
Algorithms
Anomalies
Aviation
Blade tips
Catastrophic events
Change detection
Cracks
Data mining
Equipment and supplies
Equipment Design
Experiments
Flaw detection
Gas turbine engines
Gas turbines
High temperature
High temperature environments
Instrumentation
Mechanical properties
Methods
Propulsion systems
Rotating disks
Rotation
Safety programs
Sensors
Structural analysis (Engineering)
Structural health monitoring
Studies
Technological change
Testing
Tip clearance
United States
United States National Aeronautics and Space Administration
Vibration
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Summary:The ability to monitor the structural health of the rotating components, especially in the hot sections of turbine engines, is of major interest to aero community in improving engine safety and reliability. The use of instrumentation for these applications remains very challenging. It requires sensors and techniques that are highly accurate, are able to operate in a high temperature environment, and can detect minute changes and hidden flaws before catastrophic events occur. The National Aeronautics and Space Administration (NASA), through the Aviation Safety Program (AVSP), has taken a lead role in the development of new sensor technologies and techniques for the in situ structural health monitoring of gas turbine engines. This paper presents a summary of key results and findings obtained from three different structural health monitoring approaches that have been investigated. This includes evaluating the performance of a novel microwave blade tip clearance sensor; a vibration based crack detection technique using an externally mounted capacitive blade tip clearance sensor; and lastly the results of using data driven anomaly detection algorithms for detecting cracks in a rotating disk.
ISSN:2356-6140
1537-744X
1537-744X
DOI:10.1155/2013/596506