Fatigue Damage Accumulation in a Cu-based Shape Memory Alloy: Preliminary Investigation
F. Casciati; S. Casciati; L. Faravelli; A. Marzi

Source CMC: Computers, Materials & Continua, Vol. 23, No. 3, pp. 287-306, 2011
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Keywords Damage accumulation, Fatigue, Shape memory alloy, Training.
Abstract The potential offered by the main features of shape memory alloys (SMA) in Structural Engineering applications is object of attention since two decades. The main issues concern the predictability of the material behavior and the fatigue lifetime of macro structural elements (as different from wire segments). In this paper, the fatigue characteristics, at given temperatures, of multigrain samples of a specific Cu-based alloy are investigated. The results of laboratory tests on bar specimens are discussed. The target is to model the manner in which the effects of several loading-unloading cycles of different amplitude cumulate.
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