The work production of shape memory alloy

This paper is to evaluate the work production and thermal efficiency of shape memory alloy (SMA). NiTi wire under pure tension mode is chosen for the work production and several bias components are evaluated including a linear elastic component, a non-linear superelastic SMA wire and an SMA with well developed two-way memory effect (TWME). The calculated thermal efficiency shows good agreement with the reported experimental data. The estimation of the thermal efficiency is further discussed with respect to the latest results on WAS, especially the transformation enthalpy change. Ways of increasing both the work production and the thermal efficiency of SMAs are further suggested.