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- W4299924199 abstract "Stress hotspots are regions of stress concentrations that form under deformation in polycrystalline materials. We use a machine learning approach to study the effect of preferred slip systems and microstructural features that reflect local crystallography, geometry, and connectivity on stress hotspot formation in hexagonal close packed materials under uniaxial tensile stress. We consider two cases: one without any preferred slip systems with a critically resolved shear stress (CRSS) ratio of 1:1:1, and a second with CRSS ratio 0.1:1:3 for basal: prismatic: pyramidal slip systems. Random forest based machine learning models predict hotspot formation with an AUC (area under curve) score of 0.82 for the Equal CRSS and 0.81 for the Unequal CRSS cases. The results show how data driven techniques can be utilized to predict hotspots as well as pinpoint the microstructural features causing stress hotspot formation in polycrystalline microstructures" @default.
- W4299924199 created "2022-10-03" @default.
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- W4299924199 date "2018-04-16" @default.
- W4299924199 modified "2023-09-28" @default.
- W4299924199 title "Applied Machine Learning to Predict Stress Hotspots II: Hexagonal close packed materials" @default.
- W4299924199 doi "https://doi.org/10.48550/arxiv.1804.05924" @default.
- W4299924199 hasPublicationYear "2018" @default.
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