Share Email Print
cover

Proceedings Paper

Thermomechanical transformation fatigue of SMA actuators
Author(s): Dimitris C. Lagoudas; Changcheng Li; David A. Miller; Lijian Rong
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

As SMAs gain popularity for use as large force actuators, one constitutive parameter that becomes particularly important is the thermomechanical fatigue life, in addition to maximum transformation strain and stability of actuation cycles. Even though the effect of thermal transformation cycles on the transformation characteristics of SMAs has been studied both experimentally and analytically, these studies have not been extended to high cycle levels related to the fatigue life. In this paper, a novel test frame and testing protocol are discussed to establish the transformation fatigue characteristics of SMAs under various loading conditions. Results are presented for the thermomechanical transformation fatigue life of SMA wire actuators under different applied stress levels and for different annealing conditions.

Paper Details

Date Published: 14 June 2000
PDF: 10 pages
Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); doi: 10.1117/12.388225
Show Author Affiliations
Dimitris C. Lagoudas, Texas A&M Univ. (United States)
Changcheng Li, Texas A&M Univ. (United States)
David A. Miller, Los Alamos National Lab. (United States)
Lijian Rong, Institute of Metal Research (China)


Published in SPIE Proceedings Vol. 3992:
Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

© SPIE. Terms of Use
Back to Top