This contribution presents a new methodology of fatigue tests evaluation based on digital image correlation application. The full-field strain analysis brings the possibility of 3D strain measurement evaluation on a curved part of specimen standardly used under axial-torsional loading. Resulting strain response curves can subsequently serve for evaluation of cyclic plasticity model predictions. The crucial idea is the way of FE model creation to can evaluate simulation in the same points of the structure as in the DIC measurement, which is also described in this contribution. The new methodology saves amount of material and leads to a shorter experimental time.

This work was supported by the Czech Science Foundation (GA15-18274S), by the Specific Research Project (SP2017/136).