Paper Title:
A Systematic Approach to Performance Evaluation of Shape Memory Alloys as Actuator Material
  Abstract

This work presents a combined performance evaluation approach for SMAs as actuator material – an approach based on the combination of three testing modes: a) stress-free thermal recovery mode, b) fixed-support stress generation mode and c) constant (or variable) bias-stress recovery mode. Based on this testing, a so-called “design diagram” can be constructed. This diagram demonstrates the mechanical work generation potential of an SMA and therefore represents a must-have tool for the application engineer. Given that the working envelope depends on the material composition, microstructure and number of actuation cycles, this approach allows the selection of an appropriate material and the processing technique that will meet the functional requirements of a specific application. To illustrate the proposed performance evaluation technique, we show how it can be applied to the design of an SMA actuator for a morphing wing.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
2034-2039
DOI
10.4028/www.scientific.net/MSF.638-642.2034
Citation
V. Brailovski, P. Terriault, "A Systematic Approach to Performance Evaluation of Shape Memory Alloys as Actuator Material", Materials Science Forum, Vols. 638-642, pp. 2034-2039, 2010
Online since
January 2010
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Price
$32.00
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