About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Integrated Crystal Plasticity Framework to Predict Very High Cycle Fatigue Life in Additively Manufactured AlSi10Mg |
| Author(s) |
Kamin Tahmasbi, Mohammadreza Yaghoobi, Keivan Rahmdel, Shuai Shao, Nima Shamsaei, Meysam Haghshenas |
| On-Site Speaker (Planned) |
Kamin Tahmasbi |
| Abstract Scope |
This study presents a crystal plasticity finite element method (CP-FEM) framework to predict the fatigue life of powder bed fused – laser beam (PBF-LB) AlSi10Mg, accounting for critical defects, surface roughness, and the influence of hot isostatic pressing (HIP). Fractography analysis of fatigued specimens was used to quantify the area and estimated volume fraction of critical defects, which were then embedded into synthetic microstructures. For each specimen, 15 digital samples were generated, with realistic surface roughness profiles applied to represent as-built conditions. CP-FEM simulations were conducted on each sample, and representative fatigue indicator parameters (FIPs) were computed using various averaging schemes. These results were input into a calibrated life prediction model to estimate fatigue life. The framework accurately predicted the experimental fatigue life across specimens and effectively captured the combined effects of stress amplitude, defect characteristics (volume and location), and surface roughness on the fatigue behavior of PBF-LB AlSi10Mg. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Additive Manufacturing, Aluminum |