Development of a NiTi actuator using a two-way shape memory effect induced by compressive loading cycles

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NiTi can produce a large force per unit volume and operate with a simple mechanism. For these reasons, it has been widely researched for application as an actuator In this study, preliminary research to develop a NiTi linear actuator using a two-way shape memory process is conducted. Compression tests on a NiTi cylinder to investigate basic compressive properties are performed and recovery stresses to evaluate the actuating capacity are measured. The one-way shape memory process requires compressive loading and unloading but the two-way recovery does not, Hence. a two-way recovery can be utilized more conveniently compared to a one-way process. Additionally, bolt-fracturing tests are performed to confirm the possibility of NiTi actuators. The bolts are fractured Successfully using both one-way and two-way shape memory effects. (c) 2008 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2008-12
Language
English
Article Type
Article
Keywords

PLASTIC STRAINS; ALLOYS; ASYMMETRY; BEHAVIOR; TENSION

Citation

SENSORS AND ACTUATORS A-PHYSICAL, v.148, no.2, pp.437 - 442

ISSN
0924-4247
DOI
10.1016/j.sna.2008.08.019
URI
http://hdl.handle.net/10203/87714
Appears in Collection
ME-Journal Papers(저널논문)
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