Matt Miller: Studying Structural Materials Using High Energy X-rays and Finite Elements
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Europe/Berlin
building 25 f | room 456 (DESY Hamburg)
building 25 f | room 456
DESY Hamburg
Description
Mechanical design with structural materials has been well-served by
traditional methods for linking microstructure to mechanical properties
using image-based data and mechanical testing. Modern “micrographs”
might include three-dimensional microstructural models with spatially
resolved orientation and/or chemical composition. Regardless of the
level of detail, however, a static image often obtained post-mortem
contains no information regarding how the aggregate responds to loading.
Using in situ loading, high energy synchrotron x-rays are capable of
continuously probing a deforming polycrystalline aggregate. These data
can be used with the mathematic formalism of finite elements to build a
functional, dynamic representation of the microstructure. Bringing the
experimental and simulated data into coincidence builds trust in the
finite element model and its ability to enable optimizations during the
material design process. In this talk, several examples employing
various experimental methods and functional material representations are
described examining a range of engineering materials. New high energy
x-ray capabilities and structural materials initiatives at the Cornell
High Energy Synchrotron Source (CHESS) are described and an overview of
planned CHESS upgrades is given.
Matt Miller
Professor – Sibley School of Mechanical and Aerospace Engineer
Associate Director – Cornell High Energy Synchrotron Source
Cornell University
Ithaca, NY 14853
