Measuring and testing – Vibration – By mechanical waves
Patent
1996-07-24
2000-06-20
Moller, Richard A.
Measuring and testing
Vibration
By mechanical waves
G01H 100
Patent
active
060764058
ABSTRACT:
An acoustic rotor monitor that is an autonomous self-powered measurement instrument which can detect embedded and hidden fatigue cracks in remotely inaccessible devices such as helicopter rotor system components. A predictive maintenance-related problem for rotor craft is the detection of fatigue cracks as a continuous real-time monitoring process under dynamic rotor system loading conditions. The rotor monitor focuses on the embedding an acoustic emission-based smart sensor directly into the rotor system to measure the high frequency stress waves indicating that a structural crack has propagated as a "self-powered" measurement without reducing structural integrity.
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Honeywell International , Inc.
Moller Richard A.
Shudy Jr. John G.
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