Abstract
The possibility of predicting the fatigue behavior of additively manufactured materials by means of microstructure- and defect-sensitive models is discussed in this paper. The effects of surface roughness, process-induced defects, and microstructure on the fatigue life of additively manufactured materials are presented, along with discussions on efforts to incorporate the subsequent effects of these features on fatigue performance using fracture mechanics approach, the multistage fatigue model, and numerical modeling and analysis. Such efforts in fatigue modeling are critical to evaluate the reliability of additive manufactured parts in order to further expand their industrial adoption.
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