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IRTG Modern Inverse Problems (MIP)
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SSD Seminar Series with Prof. Dr. Britta Nestler

Juni 27 @ 16:00 - 17:00

Prof. Dr. Britta Nestler – Accelerated Microstructure Design by High Performance Materials Simulations

IAM – Microstructure Modelling and Simulation, Karlsruhe Institute of Technology

Abstract

Britta Nestler is a full professor of the Department of Mechanical Engineering at Karlsruhe Institute of Technology (KIT). She holds a double position as a director of both, the Institute of Applied Materials (IAM) at KIT as well as of the Institute of Digital Materials Science (IDM) at Karlsruhe University of Applied Sciences HsKA.

The research groups at IAM and IDM have a broad and long-term experience in the development of material simulation methods based on or combined with up-to-date phase-field modelling techniques. The direction of research accounts for the comprehensive potential in the field of computational materials design by simulation of microstructure formations and phase transformations. The simulation techniques at the institute are capable to predict microstructure and mechanical property correlations for material systems with multiple components and phases under the consideration of different process conditions. Quality characteristics of materials and processes strongly vary with a change of the machining process or by varying the composition. As an example, in many manufacturing processes, the grain size distribution is a key criterion for the hardness and fracture toughness of the material. Simulations allow for the first time the in-situ insight not only into the final microstructure, but also in the three-dimensional structure formation process. New developments for microstructure simulations incorporate the consideration of strain evolution and provide new insight into the responses of the material on an imposed thermal, mechanical and magnetic field. Another focus lies in the analysis of convection and driven fluid flow on mass and heat transfer as well as on the microstructure formation. The challenges of future are in the line of the vision of Integrated Computational Materials Science and Engineering aiming to virtually design production processes by comprehensive multiscale simulation methods and by integrating knowledge from experiments and computation. Besides the macroscopic process, the microstructure characteristics are to be considered to optimize the properties of the material and of the components. The simulation of microstructure evolution plays a central role for ICME and will be combined with various physical fields such as temperature, composition, continuum mechanics and fluid flow. Computations of large scale 3D microstructures coupled with multiphysical effects essentially require to comprise modern multigrid and parallel algorithms to efficiently use high performance clusters. A multiphysics simulation framework Pace3D is being developed since 2001 and offers a parallelized simulation environment for large applied calculations on high-performance computers with excellent scalability properties and extensive data analysis algorithms for the virtual and accelerated design of new materials and for the optimized design of Process flows.

The understanding of new materials is becoming increasingly complex. Without suitable analytical methods, the constantly growing amount of huge data volumes can no longer be determined from simulations and experiments. An important aspect in order to be able to perform corresponding data analyses smoothly is the structured storage of research data and corresponding metadata. With such systems, inter-institutional hurdles can be overcome, theoretical and experimental data can be compared in the line of digital twins and reproducible workflows for data analysis are available. For this purpose, a new research data infrastructure called „Karlsruhe Data Infrastructure for Materials Science (Kadi4Mat)‘‘ is being developed and provided for public usage.

Details

Datum:
Juni 27
Zeit:
16:00 - 17:00

Veranstaltungsort

a link for the Zoom meeting room will be send in the newsletter one week before the seminar starts. If you need any organizational help please contact office@aices.rwth-aachen.de

Veranstalter

IRTG-2379 MIP