UTILIZATION OF FAST-RESPONSE PRESSURE MEASUREMENTS TO NONINTRUSIVELY MONITOR BLADE VIBRATION IN AXIAL COMPRESSORS
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United States of America Patent
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Oct 22, 2020
app pub date -
Apr 9, 2020
filing date -
Apr 19, 2019
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Abstract
The present disclosure relates to a novel method to monitor rotor blade vibration using unsteady casing pressure. The novel method applies a non-intrusive blade vibration monitoring technique by using an array of unsteady pressure sensors flush-mounted in the casing of a multistage axial compressor. The novel method comprises using spinning mode theory to obtain frequency and nodal diameter information for all pressure waves that can be identified and determining any of the pressure waves that is associated with blade vibration.
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