On the preparation and characterization of thin NiTi shape memory alloy wires for MEMS

Riccardo Casati; Maurizio Vedani; Syed A. M. Tofail; Calum Dikinson; Ausonio Tuissi

doi:10.3221/IGF-ESIS.23.01

On the preparation and characterization of thin NiTi shape memory alloy wires for MEMS

Authors

Riccardo Casati Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 34, Milano, Italy
Maurizio Vedani Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 34, Milano, Italy
Syed A. M. Tofail Materials and Surface Science Institute, University of Limerick, Limerick, Ireland
Calum Dikinson Materials and Surface Science Institute, University of Limerick, Limerick, Ireland
Ausonio Tuissi National Research Council (CNR-IENI), Corso Promessi Sposi 29, Lecco, Italy

DOI:

https://doi.org/10.3221/IGF-ESIS.23.01

Keywords:

Shape memory alloys

Abstract

Shape memory alloy (SMA) wires are employed as actuators in small devices for consumer electronics, valves and automotive applications. Because of the continued miniaturization of all the industrial products, nowadays the tendency is to produce MEMS (micro electromechanical systems). Among the most promising functional MEMS materials, the thin SMA wires that are offering a rapid actuating response with high power/weigh ratio of the material, are attracting a world wide interest. This paper is aimed at showing the production process and the characterizations of thin NiTi shape memory wires. The activity was focused on drawing procedure and on functional and TEM characterizations of the final products. In particular, it was evaluated the performance of the SMA wires for actuators in terms of functional fatigue and thermo-mechanical properties by means of an experimental apparatus design ad hoc for these specific tests

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Published

28-12-2012

Issue

Vol. 7 No. 23 (2013): January 2013

Section

Miscellanea

License

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

On the preparation and characterization of thin NiTi shape memory alloy wires for MEMS. (2012). Frattura Ed Integrità Strutturale, 7(23), Pages 7-12. https://doi.org/10.3221/IGF-ESIS.23.01