Vibration-induced energy harvesting system using Terfenol-D

This paper introduces a novel energy harvesting technology with GMM (Giant Magnetostriction Material) which is capable of generating electricity by utilizing a reverse transduction of the material. Terfenol-D is employed in this study. The generator receives ambient vibrations as a power source which are commonly available in our daily life. Dimensions of Terfenol-D used are 3mm in diameter and 8mm in length. Two different kinds of prototypes are designed and fabricated in this study. This report presents the basic characteristics of the prototypes and some experimental results. Also a new energy harvesting system under development is introduced at the end of the paper where the system is installed inside running shoes.