A Study of the Effect of Diameter on the Fatigue Properties of NiTi Wire
Source abstract
Abstract
It is a generally held belief that controlled strain fatigue life is independent of wire diameter. This has led to the widespread use of general S-N or e-N curves for engineering metals. Independence of wire diameter on fatigue life may not hold true for Nitinol. If so, care must be used when applying generic Nitinol S-N or e-N curves to product design. To provide a more comprehensive understanding of this issue, a comparison study was conducted on the fatigue properties of various diameters of NiTi (Ti-55.8/55.9wt.%Ni) wire drawn from the same starting material. e-N curves were generated for various diameters. The wire diameter reduction from 0.030′′ to 0.010′′ increased the 0.8% strain 80k cycle survival rate from 35 to 96%. For the scope of this study, all factors that may have an effect on fatigue life except for wire diameter were held constant.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Shape Memory Alloy Transformations · Titanium Alloys Microstructure and Properties · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (7)
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