Abnormal Failure in Vibration-based Energy Harvester

초록

This study aims to investigate the failure mechanism and improve the structural design of the VEH. For this purpose, we first observed the surface of a failed VEH under service condition using a scanning electron microscope (SEM). To identify the performance and structural integrity of the VEH, particularly its moving component, a vibration test was performed under sinusoidal acceleration environment. Then, frequency response analysis was performed to identify the failure critical location and system responses such as stress distribution. Finally, we recommended several measures to prevent the failure of the moving component in VEHs.