What Are Stress-Temperature Curves?
Stress-temperature curves describe how applied mechanical stress influences the transformation temperatures of a Shape memory alloys (SMAs). These curves illustrate the relationship between stress and the temperatures at which martensitic and austenitic phase transformations occur.
Stress-Temperature Curves in SMA Actuators
As stress increases, transformation temperatures typically shift, altering the conditions required for actuation and shape recovery. Understanding this relationship is essential for predicting actuator performance under load, particularly in applications where SMAs operate under constant or variable mechanical stress.
Stress–temperature curves are widely used in SMA characterisation, actuator design, and thermal control strategies, enabling reliable operation in aerospace, robotics, medical devices, and other precision systems.