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Accession Number N20120012585
Title Turbine Engine Disk Rotor Health Monitoring Assessment Using Spin Tests Data.
Publication Date Mar 2012
Media Count 11p
Personal Author A. Abdul-Aziz G. Baalini J. R. Bodis M. Woike
Abstract Detecting rotating engine component malfunctions and structural anomalies is increasingly becoming a crucial key feature that will help boost safety and lower maintenance cost. However, achievement of such technology, which can be referred to as a health monitoring remains somewhat challenging to implement. This is mostly due to presence of scattered loading conditions, crack sizes, component geometry and material properties that hinders the simplicity of imposing such application. Different approaches are being considered to assist in developing other means of health monitoring or nondestructive techniques to detect hidden flaws and mini cracks before any catastrophic events occur. These methods extend further to assess material discontinuities and other defects that have matured to the level where a failure is very likely. This paper is focused on presenting data obtained from spin test experiments of a turbine engine like rotor disk and their correlation to the development of a structural health monitoring and fault detection system. The data collected includes blade tip clearance, blade tip timing measurements and shaft displacements. The experimental results are collected at rotational speeds up to 10,000 Rpm and tests are conducted at the NASA Glenn Research Center s Rotordynamics Laboratory via a high precision spin system. Additionally, this study offers a closer glance at a selective online evaluation of a rotating disk using advanced capacitive, microwave and eddy current sensor technology.
Keywords Cost reduction
Eddy currents
Fault detection
Microwave sensors
Rotating disks
Rotor dynamics
Shafts(Machine elements)
Spin tests
Systems health monitoring
Turbine engines
Velocity distribution

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 94 - Industrial & Mechanical Engineering
Corporate Author National Aeronautics and Space Administration, Cleveland, OH. NASA John H. Glenn Research Center at Lewis Field.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1303
Contract Number NNC07ZRP001N

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