[P] P202~P216 Mechanical Properties of Materials

[P214] Evaluation of Fatigue Crack Initiation Scatter in Pure Titanium Using Diffusion-Model-Based Microstructure Generation and CPFEM

○Shohei Yachi¹, Takayuki Shiraiwa¹ (1. Tokyo Univ.)

Keywords:

Crystal plasticity finite element method,Denoising diffusion probabilistic model,Pure titanium,High-cycle fatigue,Fatigue crack initiation

CPFEM was applied to DDPM-generated polycrystalline pure titanium microstructures to computationally evaluate scatter in high-cycle fatigue crack initiation. The fatigue indicator parameter (FIP) varied among microstructures under the same stress amplitude, and its correspondence with the experimental S–N curve was investigated.