Application of structural health monitoring for damage identification in an industrial fan rotor using in-situ modal analysis testing
Date
2014
Authors
Wilcox, Chad M., author
Willson, Bryan D., advisor
Alciatore, David G., committee member
Bienkiewicz, Bogusz J., committee member
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Abstract
A testing procedure is desired which can be applied in manufacturing environments to determine the structural integrity of rotating components within a machine. Current non-destructive evaluation (NDE) of components includes visual inspection, dye penetrant, and x-ray testing. Each of these NDE techniques have limitations in manufacturing plants given very limited time frames and access to rotating components. Vibration condition monitoring is widely used and accepted as a beneficial way to determine faults in rotating equipment. Current vibration condition monitoring practices rely on measurement and analysis of response data. The response data is affected by both changing forces and structural parameters of the system being measured. Therefore, determining whether forces have changed or the structure has been compromised is not readily determined from vibration condition monitoring data. Structural health monitoring (SHM) has been implemented for a variety of structural faults including: cracking and breaking, loosening of assembled parts, flaws and voids caused by manufacturing, and improper assembly of parts (Wolff & Richardson, 1989). Many studies in the area of SHM have focused on idealized test setups and have used only simulated data. This study focuses on implementation of SHM on the rotating assembly of an industrial fan. The data and results from SHM are used to validate whether or not the structure has been compromised.
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Subject
condition monitoring
fan
modal analysis
NTD
structural health monitoring
vibration analysis