English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Propagation in a localized region of stress-induced phase transformation under strain variations in TiNi SMA is analyzed experimentally, by tension tests for wire and theoretically, by numerical simulation, FEM that is based on J 2 F theory. From the infrared thermograph during tension tests, it is found that a localized region of transformation appears near the end of the wire. The localized region of transformation propagates according to extension of the specimen, which gives rise to typical characteristics in the nominal stress-strain curve under strain variables of SMA wire (For example, the overshoots, the flat stress regions for reverse transformation and the nonlinear phenomena near the finishing points of transformation). Based on the constitutive assumptions of the softening type of the true stress-logarithmic strain curve, the simulated result exhibits the former typical behaviors associated with propagation of transformation. The validity of the constitutive assumptions and the mechanisms of the former behaviors are discussed by comparison of the experimental and the simulated results.

Propagation of Phase Transformation under Strain Variations of TiNi based Shape Memory Alloy Wire