Experimental investigation on the cyclic properties of superelastic NiTi shape-memory alloys

Student: Davide Fugazza
Supervisors: Prof. F. Auricchio, Dr R. DeRoches

Abstract

The presented study investigates the cyclic properties of superelastic NiTi shape-memory alloy (SMA) elements to assess their potential for seismic applications. Superelastic SMA wires and bars of different size and chemical composition are subjected to both static and dynamic cyclic loadings, in order to evaluate their dependence on the frequency of excitation. Attention is devoted to the quantities that are of interest in earthquake engineering, in particular damping properties, material strength and recentering capabilities.

Keywords: shape-memory alloys, cyclic loadings, damping, strain rate.

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