Detection and diagnosis of incipient bearing failure in helicopter gearboxes
Detection and diagnosis of incipient bearing failure in helicopter gearboxes
- New search for: Randall, R.B.
- New search for: Randall, R.B.
In most machines, the vibration signature of bearing faults extends into a higher frequency range than most other components, and this allows separation. In the case of helicopter gearboxes, there is a very wide range of shaft frequencies between input and output, and the associated gearmesh frequencies cover the whole audio frequency range. Techniques have thus been developed to separate the gear signals from the bearing signals, based on their different statistical properties. Other techniques have been developed to separate gear and bearing effects even when they are combined multiplicatively rather than additively. The techniques are illustrated using case history data obtained from the US Navy, from faults in three helicopter gearboxes.
Document information
Detection and diagnosis of incipient bearing failure in helicopter gearboxes
Erkennung und Diagnose eines beginnenden Lagerausfalls bei Hubschraubergetrieben
2004
14 Seiten, 17 Bilder, 7 Quellen
Conference paper
English
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