About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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ICME Gap Analysis in Materials Informatics: Databases, Machine Learning, and Data-Driven Design
|
Presentation Title |
Relating Microstructure Features to Response Using Convolutional Neural Networks |
Author(s) |
Sean P. Donegan, Navneet Kumar, Michael Groeber |
On-Site Speaker (Planned) |
Sean P. Donegan |
Abstract Scope |
Fast acting methods for quantifying the relationship between microstructure and properties are an enabling capability for ICME-driven materials design. Given a property of interest, a number of microstructural factors may contribute to the magnitude of its response. For example, hot spots in the local stress state of a polycrystal may arise from elastic anisotropy, local morphology, and crystallographic orientations relative to the load state. It is therefore advantageous to investigate frameworks that predict properties directly from an input microstructure, learning the necessary features based on training data. We describe such a method using convolutional neural networks (CNNs), parameterizing the input microstructure as an image. The CNN is trained by creating synthetic microstructures in DREAM.3D whose elastic response is modeled using a technique based on fast Fourier transforms. We discuss the importance of capturing key information, such as crystallographic anisotropy, in the microstructural image description, and its impact on model accuracy. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |