Measuring and testing – Vibration – Sensing apparatus
Patent
1981-07-29
1983-11-08
Kreitman, Stephen A.
Measuring and testing
Vibration
Sensing apparatus
73655, 73659, G01H 304
Patent
active
044135190
ABSTRACT:
Turbine blade vibration detection apparatus having two or more extremely narrow beam radar sensors positioned to direct their radar signals towards predetermined blade row or rows. A blade identification circuit is provided for each blade row having an associated radar sensor for providing an output count indicative of which blade is being examined by a particular radar sensor. The gating of the blade count and radar sensor signals is governed by a computer which performs a frequency analysis of the radar signals and compares the result with predetermined threshold values.
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Bannister Ronald L.
Beatty John M.
Kreitman Stephen A.
Schron D.
Westinghouse Electric Corp.
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