A4 Conference proceedings

Fast Actuation of Magnetic Shape Memory Material Ni-Mn-Ga Using Pulsed Magnetic Field


LUT Authors / Editors

Publication Details
Authors: Saren Andrey, Tellinen Juhani, Musiienko Denys, Ullakko Kari
Publication year: 2016
Language: English
Title of parent publication: Proceedings ACTUATOR 2016 15th International Conference on New Actuators & 9th Exhibition on Smart Actuators and Drive Systems
Start page: 101
End page: 103
ISBN: 978-3-933339-26-3
eISBN: 978-3-933339-27-0
JUFO-Level of this publication: 0
Open Access: Not an Open Access publication

Abstract
Pulsed magnetic field-induced actuation of magnetic shape memory material Ni-Mn-Ga 5M martensite has been studied. Saturation velocities of fast-moving single type II twin boundaries in a range of 35-39 m/s were directly observed using high-speed camera technique. Corresponding actuation velocities of 2.1-2.3 m/s were acquired using laser Doppler vibrometry technique, both for elongation and contraction of the sample. In a case of multiple twin boundaries motion, actuation velocities of 4-5.5 m/s and actuation accelerations of (4-7)×105 m/s2 were achieved. The actuation response time was measured to be less than 1 μs. The reported results have a potential for the development of new applications, especially in microscale devices where the working frequency can be significantly increased. Example potential applications are fast optical and electrical switches,pneumatic/hydraulic valves, microfluidic pumps and valves, micromanipulators and grippers.

Last updated on 2018-19-10 at 08:49