Abstract
A new diagnostic method by using a laser reflection was developed. The variations of the laser reflection between the initial and the present conditions are compared, and it can estimate a condition on the tooth surface. To verify that our method can accurately diagnose a tooth surface of the lubricated gear, measurement experiment in the practical used gearbox was carried out. By attaching the cover, the response of measured data had more sensitive. Under the condition of force-feed lubrication, pitting could be detected in every range less than 1800rpm. Therefore, our method can diagnose a tooth surface of the lubricated gear in the practical used gearbox.
