Detection of chipped tooth in gears by the novel vibration residual technology

Len Gelman, Ian Jennions, and Ivan Petrunin
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Submission Type: 
Technical Brief
ijPHM_11_012.pdf402.71 KBNovember 25, 2011 - 10:30am

Novel vibration residual technology is applied for the first time for detecting a partly-missing (chipped) tooth in a gearbox of the machine fault simulator (MFS). One stage gearbox consists of two bevel gears. The load on the gearbox was applied by a magnetic brake system. An advanced automatic technology for the time synchronous averaging of the raw gear vibrations has been employed; this technology does not require speed data. An advanced technique based on the likelihood ratio is developed for decision making. A partly missing tooth has been continuously detected throughout the whole test duration without false alarms and missed detections.

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Submission Keywords: 
damage detection
chipped tooth
the residual technology
likelihood ratio
Submission Topic Areas: 
Data-driven methods for fault detection, diagnosis, and prognosis
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