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Principle Design of Actuators Driven by Magnetic Shape Memory Alloys
Author(s) -
Schlüter Kathrin,
Holz Benedikt,
Raatz Annika
Publication year - 2012
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201200078
Subject(s) - actuator , spring (device) , shape memory alloy , materials science , mechanical engineering , stress (linguistics) , element (criminal law) , magnetic shape memory alloy , computer science , magnetic field , engineering , metallurgy , artificial intelligence , physics , magnetic domain , linguistics , philosophy , magnetization , quantum mechanics , law , political science
Magnetic shape memory alloys (MSMA) are a promising material for actuation purposes as they provide relatively large strains and relatively high operation frequencies. In this paper three concepts of such actuators are introduced. The first part will describe a so called spring actuator, where the MSM element is working against a restore pre‐stress spring. The second concept uses two MSM elements working antagonistically to substitute the pre‐stress spring. A small sized actuator for valve or switching applications is shown in the third concept. Advantages and disadvantages are highlighted and show the potential of the comparatively new active material.