%0 Journal Article %T Detection of chipped tooth in gears by the novel vibration residual technology %A Len Gelman %A Ian Jennions %A I Petrunin %J International Journal of Prognostics and Health Management %D 2011 %I The Prognostics and Health Management Society %X 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. %K gearbox damage detectio %K chipped tooth %K residual technology %K likelihood ratio %U http://www.phmsociety.org/sites/phmsociety.org/files/phm_submission/2010/ijPHM_11_012.pdf