A note on size effect in actuating NiTi shape memory alloys by electrical current

L. An, W. M. Huang, Y. Q. Fu, N. Q. Guo

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11 Citations (Scopus)


The size effect in triggering the actuation of NiTi shape memory alloys directly by electrical current is investigated. Wire/rod is taken as an example in this study to show the relationship between the diameter of shape memory alloy wire/rod and the required current/power for actuation, and in the case of cyclic operation, achievable frequency. Through a few case studies, it is revealed that by presenting on logarithmic scale, the major operating characteristics can be quickly estimated as linear functions of wire/rod diameter.

Original languageEnglish
Pages (from-to)1432-1437
Number of pages6
JournalMaterials & Design
Issue number7
Publication statusPublished - 2008


  • Actuation
  • Frequency
  • Power
  • Shape memory alloy
  • Size effect

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