Thermomechanical methodology for stabilizing shape memory alloy (SMA) response

A method of stabilizing a strain-temperature response for a shape memory alloy, comprising:

• selecting a first sample of the shape memory alloy for isobaric treatment and a second sample of a shape memory alloy for isothermal treatment, in order to train and stabilize the shape memory alloy against the isobaric condition;
• when applying the isobaric treatment to the first sample,
• applying a constant stress to the first sample and cycling a temperature from a minimum temperature to a maximum temperature until a strain within the first sample stabilizes;
• and
• when applying the isothermal treatment to the second sample,
• applying a stress to the second sample until the second sample fails,
• measuring each strain within the second sample according to different levels of stress applied on the second sample, and
• from the measured strains, matching a strain of the second sample with the stabilized strain of the first sample.