Materials may behave unpredictably when exposed to multiaxial loads, exhibiting different material properties. Characterizing these material properties across a wide spectrum of materials becomes very important, as there is an abundance of products that are designed to be exposed to biaxial loading during normal operating conditions.

Axial-torsion testing machines help characterize biaxial mechanical properties of materials, both in static and dynamic conditions, which helps in choosing the right materials for different applications where components are exposed to axial torsion loading profiles. This requires material research for component design and material verification stages in numerous industries and research to meet safety requirements. 

Axial-Torsion applications and research areas include:
Characterization of materials under biaxial stress loading, static or dynamic
Cumulative damage of turbine blade components under axial-torsion loading
Fatigue life of biomedical materials and implants