Basic performance evaluation of the axle bearing anti-vibration rubberembedded piezoelectric elements

The authors investigate a method to monitor the running condition of a bogie using an axial spring anti-vibration rubber with a built-in piezoelectric element called "anti-vibration rubber with built-in sensor". In the previous study, it was found that the piezoelectric element in the anti-vibration rubber with built-in sensor move during the rubber molding process. It may affect the performance of the sensor. Therefore, a new piezoelectric element in the anti-vibration rubber with built-in sensor was fabricated to prevent the piezoelectric element from moving during the rubber molding process. In this paper, we report the results of the basic characteristics of the newly fabricated piezoelectric element in the anti-vibration rubber with built-in sensor, such as frequency characteristics and fatigue characteristics.