Nitinol Finger Actuator

 

Abstract
This project aims to minimize the discomfort of traditional prosthetics by replacing heavier actuators with Nitinol coils. A prosthetic finger can be fully curled through mechanical actuation. This is accomplished using the shape memory alloy (SMA) wire Nitinol. Nitinol changes to a set tight coil shape after it is heated. This actuator is electrically controlled through Joule heating. The finger mechanism works through a rigging system which transfers mechanical work from the actuator to the prosthetic. An array of Nitinol coils has scalable actuation force and length with a higher specific power compared to an electric servo for use in a robotic hand. Community Benefit:  Using technology assistive prosthetics to enable individuals to function to the best of their ability.
 

Team Members

Hamad Alkandari
Julio Elvir
Norlan Largaespada
Vincent Pipitone 
Colter Robinson