Effect of Phase angle of Acceleration on Fatigue life in Frequency Domain of Vibration-Based Energy Harvester for Railway vehicle



Ji-Won Jin Ki-Weon Kang


This study aims to perform fatigue life prediction of vibration-based energy harvester (VEH) considering resonance characteristics. First, we investigated the vibration environment of a structure on which an energy harvester may be installed and determined the level and frequency range of the power spectral density (PSD) exerted on the energy harvester. On the one hand, this research considered random vibration load, because VEH was operated by resonance phenomena. So, to consider random load, life prediction was performed by durability test machine and system. And in order to consider dynamic effect by natural frequency, vibration fatigue analysis was performed in frequency domain. Also, we were performed durability test and vibration fatigue under random load, which is composed of the PSD. As results, accuracy of life prediction procedure for VEH by vibration fatigue analysis was verified.

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