Data-Driven Materials Modeling with XGBoost Algorithm and Statistical Inference Analysis for Prediction of Fatigue Strength of Steels

Abstract

With the rapid development of the industry, the demand for new materials is increasing. However, new material development is time-consuming and costly. In this study, we proposed a workflow that uses data to create a materials model that accurately reflects the properties of materials. Six different numerical models for predicting the fatigue strength of steels were constructed with an empirical dataset extracted from a certified database (NIMS MatNavi material database). Because it is very difficult to understand the structure and patterns of large amounts of datasets and develop good predictive models at once, we have sought reliable models through statistical inference analysis, which has not been done in previous studies. We also chose the highest performance model with the accuracy (R2 = 0.9850) by applying the latest XGBoost algorithm. Through further study, we believe that this workflow can be used to develop predictive models on various properties of materials.