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.
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|Titolo:||Low-to-high cycle fatigue properties of a NiTi shape memory alloy|
|Data di pubblicazione:||2019|
|Appare nelle tipologie:||1.1 Articolo in rivista|