Study on the In-process Measurement of the Friction and Wear with AE Technique—- Monitoring of Seizure Process through AE Analysis —

Abstract

AE signals, which are occurred on friction and wear, have a good correlation with the phenomena of friction and wear. In this paper, the seizure process of journal bearing were measured by AE technique. It was found that AE signals can detect the unusual phenomenon of the bearing condition at in-process and higher sensitivity than that of other monitoring method, such as the measurement of frictional force and frictional temperature. That is based on the following results. (1) The processes of seizure have several different cases, do not always change regularly. (2) But, in the case of generate seizure, AE signals are characterized by the AE frequency spectrum of above 0.5 MHz. (3) Moreover, this characteristic appears much earlier than the seizure. (4) As mentioned above, the measurement of AE signals is effective in the prediction of seizure. © 1990, The Japan Society for Precision Engineering. All rights reserved.