自律型損傷検知システムによる車軸軸受に発生したはく離の検知性能評価

抄録

When a flaking occurs in an axle bearing housed in an axle box, the axle box tends to abnormally vibrate. We have developed an autonomous damage detection system that detects and notifies receiver of flaking of axle bearing by actively utilizing the abnormal vibration of the axle box. The system uses an anti-vibration rubber installed on the axle box. The system consists of piezoelectric elements to convert the vibration to electric power and a transmitter built into an anti-vibration rubber. The transmitter is driven by the electric power from the piezoelectric element to notify the receiver of damage. In this study, to evaluate the detection performance of the autonomous damage detection system we conducted an experiment using the axle bearing fatigue test equipment, after flaking is artificially generated and propagated.