A unified rule for high-cycle and low-cycle fatigue life prediction in multi-scale framework

A Predictive Damage-Tolerant Approach for Fatigue Life Estimation of Additive Manufactured Metal Materials

“…The extension of the present methodology for the analysis of lattice materials or lattice optimized parts-where the stress-strain approaches prevail [66,67]-is also a considerable challenge due to their developed microcrack initiation and propagation. Moreover, a multi-scale modeling approach [68] or a unified approach [69] that incorporates information of defect(s) and microstructural characteristics for fatigue life prediction can be developed. Thus, the synergistic effect between microstructure and anomalies which prevails in the Low Cycle Fatigue (LCF) regime can be sufficiently modeled, and the framework can cover fatigue mechanisms for both HCF and LCF regimes.…”