Methods for evaluating fracture patterns of polycrystalline materials based on the parameter analysis of fatigue striations: A review

This is the authors' abstract. We don't add key points for this paper.

• Basic concepts about fatigue failure of materials are described. • Methods for analysing fatigue failure mechanisms at the macro-, meso‑ and micro- levels are summarised. • Software implementations of the main methods for analysing the mechanisms of fatigue failure of polycrystalline materials are compared. A review of the main literature sources was conducted, which made it possible to systematise various techniques, methods and software for studying the fracture mechanisms of polycrystalline materials. The principles of describing the patterns of failure surfaces based on multi-scale analysis (at the macro-, meso‑ and microlevels) were considered. Algorithms that recognize and calculate the parameters of fatigue striations on SEM images are analysed. They proved to be functional and capable of providing a valuable information and fractographic control.