|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||Challenges with Virtual Sample Instantiation for Prediction of Strain Localization and Crack Initiation in Polycrystalline Ni- and Ti-base Alloys
||J.C. Stinville, McLean P Echlin, William C Lenthe, Toby Francis, Tresa Pollock
|On-Site Speaker (Planned)
The availability of 3D microstructural data enables direct generation microstructural volume elements for elastic and plastic analysis and/or for extraction of statistical distributions that can be sampled for generation of virtual test samples. Examples of 3D datasets of nickel and titanium alloys generated by the TriBeam tomography approach will be presented. Corresponding analyses of the size of the microstructural representative volume elements and their relationship to the microstructural inhomogeneities in these materials will be discussed. Predictions of plasticity models for the distribution of strain in the early stages of monotonic and cyclic loading will be compared to high-resolution digital image correlation observations. Challenges and opportunities with the sample instantiation approach will be addressed.
||Planned: Supplemental Proceedings volume