Abstract
This paper describes evaluation about repeatable motion of an actuator using thin SMA wire applied for assistant artificial heart muscle. Ti-Ni-Cu wire covered by polyimide tube is combined with thin phosphor bronze plate to make actuator, which is small enough to implant in human body. Actuator elastically bends in arch shapes with electrical pulse application. Numerical evaluation using finite element method shows low consumption motion of the actuator with short time pulse application. Motion response of the actuator in water maintained at 38℃ is numerically and experimentally evaluated as 1.4Hz of motion frequency.
