# Assessing and Forecasting Fatigue Strength of Metals and Alloys under Cyclic Loads

## TL;DR

This paper identifies patterns in metal fatigue under cyclic stress and proposes a universal method to predict fatigue life across various metals and alloys.

## Contribution

A universal system of parameters for forecasting high-cycle fatigue in metals and alloys under diverse conditions is proposed.

## Key findings

- Patterns in fatigue life and limit of metals under cyclic stress were identified.
- A generalized dependence of recalculated fatigue parameters was obtained and validated through sensitivity analysis.
- A unified system of parameters was proposed for forecasting high-cycle fatigue processes.

## Abstract

Within the scope of this research, patterns of changes in the fatigue life and limit of metals under cyclic stress were identified and the most informative parameters were determined as the basis for developing a method for the universal transformation of experimental data on the fatigue of metals and alloys for their subsequent generalization. Experimental data on metal fatigue, obtained by a large number of authors for a wide range of grades of steels and alloys, under the influence of various combinations of factors, were systematized. A generalized dependence of the recalculated parameters of fatigue life and limit was obtained, its characteristics were assessed, and a sensitivity analysis was performed, confirming the universal nature of the obtained dependence. A system of parameters has been proposed making it possible to consider and forecast high-cycle fatigue processes for a wide range of metals and alloys, under the conditions of various combinations of operating factors, from unified positions and a more general point of view.