Multi-Scale Computational Design of Materials under Uncertainty

Wednesday, September 18, 2019

2:30 - 3:45 pm

107 Surge Building, Virginia Tech Campus

Dr. Pinar Acar

Department of Mechanical Engineering

Virginia Tech

Abstract:

The area of multi-scale modeling and design has been garnering a considerable interest due to the increasing needs for high-performance materials in electronics, energy, biomedical, and structural applications. The research on these materials will potentially extend in the future with the fabrication of adaptive thermal response materials, energetic composites, thermal energy harvesting materials and materials for green energy applications.

In this talk, we will address a multi-scale design study that links the micro and macro scales to improve the component-level properties of polycrystalline materials. These properties are sensitive to microstructural variations, which are introduced by the experimental uncertainty. We developed an analytical uncertainty quantification (UQ) algorithm to model the uncertainty propagation to the microstructure features and material properties. With the integration into an automated optimization framework, we significantly reduced the computation time, effectively captured the outcomes of stochasticity in microstructure design and simplified achieving multiple material designs with optimized properties.

Biography:

Pinar Acar is an Assistant Professor at the Mechanical Engineering Department of Virginia Tech. Her research interests are multi-scale materials modeling, uncertainty quantification, optimization, and machine learning. She received her Ph.D. degree in 2017 from the Aerospace Engineering Department of the University of Michigan. Before joining Michigan, she obtained her MSc degree at Istanbul Technical University, where she led a team in designing the first satellite de-orbiting system of Turkey. Dr. Acar is the recipient of the International Amelia Earhart Fellowship. She is a member of the American Society of Mechanical Engineers (ASME), The Minerals, Metals & Materials Society (TMS), Society for Industrial and Applied Mathematics (SIAM), and American Institute of Aeronautics and Astronautics (AIAA), where she is also serving in Materials and Non-Deterministic Approaches Technical Committees. Dr. Acar has currently authored/co-authored more than 60 journal and conference papers, and 2 book chapters for the NATO Science and Technology Organization.