Remote self-powered structure monitor

G - Physics – 08 – C

Patent

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Details

G08C 17/02 (2006.01) G01H 1/00 (2006.01) G01H 11/08 (2006.01) G01N 29/14 (2006.01) G01N 29/42 (2006.01) G01N 29/46 (2006.01)

Patent

CA 2198737

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 structure crack has propagated as a "self-powered" measurement without reducing structural integrity.

Contrôleur acoustique de rotor, constitué par un instrument de mesure à alimentation autonome pouvant détecter les fissures de fatigue internes et cachées dans des dispositifs éloignés inaccessibles, tels que les composants d'un système de rotor d'hélicoptère. L'un des problèmes de maintenance prédictive consiste à détecter les fissures de fatigue dans le rotor d'un hélicoptère dans le cadre d'un procédé de surveillance continu en temps réel dans des conditions de charge dynamiques du système de rotor. Le contrôleur de rotor ci-décrit se compose d'un capteur intelligent sensible aux émissions acoustiques intégré directement dans le système de rotor, qui mesure les ondes de contraintes à haute fréquence indiquant la propagation d'une fissure structurale, et cela en étant alimenté de manière autonome et sans réduire l'intégrité structurale.

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