Behaviour of NiTi SMA Helical Springs under Different Temperatures and Deflections

Table 1

DSC results.

Transformation temperatures (°C)
Mf	Ms	As	Af
43.69	56.62	53.47	66.45

Note: for conducting the experiments, the temperatures are taken between 25°C and 85°C which are approximately derived from Mf of DSC −18°C and Af of DSC +18°C to ensure that the SMA spring has reached fully austenitic/martensitic condition.