Review on machine learning techniques for the assessment of the fatigue response of additively manufactured metal parts

The present review paper addresses the increasing interest in the application of machine learning (ML) algorithms in the assessment of the fatigue response of additively manufactured (AM) metal alloys. This review aims to systematically collect, categorize, and analyze relevant research papers in this domain. The most commonly used ML algorithms are presented, discussing their specific relevance to the fatigue modeling of AM metal alloys. A detailed analysis of the most relevant input features used in the literature to predict the main parameters related to the fatigue response is provided. Each work has been analyzed to highlight its strengths and peculiarities, thereby offering insights into novel methodologies and approaches for addressing critical challenges within this field. Particular attention is dedicated to the role of defects and the related size-effect, as they strongly influence the fatigue response. In conclusion, this review not only synthesizes existing knowledge but also offers forward-looking recommendations for future research directions, providing a valuable resource for researchers in the domain of ML-assisted fatigue assessment for AM metal alloys.