Low-to-high cycle fatigue behavior of a pseudoelastic NiTi SMA was analyzed. The evolution of both global and local strain were captured during fatigue tests. Local strains were measured in-situ by the digital image correlation (DIC) technique. Significant differences were observed at the two scales, due to the localized nature of stress-induced transformations. Strain-life fatigue curves obtained from global and local strain measurements were compared. It was demonstrated that local phenomena play a very important role on the fatigue properties of pseudoelastic SMAs.
Low-to-high cycle fatigue properties of a NiTi shape memory alloy / Sgambitterra, E.; Magaro, P.; Niccoli, F.; Renzo, D.; Maletta, C.. - In: PROCEDIA STRUCTURAL INTEGRITY. - ISSN 2452-3216. - 18:(2019), pp. 908-913. [10.1016/j.prostr.2019.08.242]
Low-to-high cycle fatigue properties of a NiTi shape memory alloy
Renzo D.;
2019
Abstract
Low-to-high cycle fatigue behavior of a pseudoelastic NiTi SMA was analyzed. The evolution of both global and local strain were captured during fatigue tests. Local strains were measured in-situ by the digital image correlation (DIC) technique. Significant differences were observed at the two scales, due to the localized nature of stress-induced transformations. Strain-life fatigue curves obtained from global and local strain measurements were compared. It was demonstrated that local phenomena play a very important role on the fatigue properties of pseudoelastic SMAs.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
