What Is Characterisation of SMAs
Characterisation refers to the set of experimental techniques used to determine the mechanical, thermal, magnetic, and structural properties of shape memory alloys (SMAs). Accurate characterisation is essential for understanding SMA behavior and for designing reliable actuators and smart material systems.
Structural Characterisation Techniques
Common mechanical characterisation methods include tensile testing, which evaluates transformation stress, strain, and fatigue behavior. Differential scanning calorimetry (DSC) is widely used to measure transformation temperatures and thermal hysteresis, while X-ray diffraction (XRD) provides insight into crystal structure, phase composition, and crystallographic orientation.
Together, these characterisation techniques enable precise control of actuation performance, reliability, and functional stability in SMA-based applications.