Functional fatigue of Ni–Ti shape memory wires under various loading conditions

Non-proportional multiaxial whole-life transformation ratchetting and fatigue failure of super-elastic NiTi shape memory alloy micro-tubes

“…For examples, Eggeler et al [1], Wagner et al [2], Matsui et al [3], Bahia et al [4], Yan et al [5], Cheung et al [6], Figueiredo et al [7], Bernard et al [8] and Chan et al [9] performed some strain-controlled cyclic bending and rotating-bending tests, and discussed the effects of the loading rate, temperature and pre-processing method on the cyclic deformation of fatigue failure of NiTi SMA; Moumni et al [10], Predki et al [11], Kang et al [12,13], Chatellet and Moumni [14], Mammano et al [15], and Song et al [16,17] conducted some stress-controlled uniaxial and torsional cyclic loading tests and investigated the effects of the peak stress, mean stress and ambient temperature on the cyclic deformation (including the so-called transformation ratchetting (Kang et al [12])) and fatigue life of the NiTi SMA.…”

Three-dimensional constitutive model for structural and functional fatigue of shape memory alloy actuators

“…Probabilistic modeling may be a useful tool in fatigue life analysis of SMA bodies, given the scattering observed in the thermomechanical response of nearly identical test samples demonstrated in experimental works (Figueiredo et al, 2009;Nemat-Nasser and Guo, 2006). Relevant experiments (Scirè Mammano and Dragoni, 2014) Maletta et al (2012Maletta et al ( , 2014 to predict the fatigue life of NiTi SMAs under the stress-controlled cyclic loading conditions. A third…”

Development of an iron-based alloy with a high degree of shape recovery

“…However, these alloys are quite expensive and their application in mechanical engineering is not economically expedient [10][11]. Given this, studies into finding and developing new alloys with a shape memory effect are relevant now; in this case, of the largest interest for metallurgy and mechanical engineering are the iron-based alloys.…”