Conference Tools for 2020 TMS Annual Meeting & Exhibition

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About this Abstract
Meeting	2020 TMS Annual Meeting & Exhibition
Symposium	Characterization: Structural Descriptors, Data-Intensive Techniques, and Uncertainty Quantification
Presentation Title	X-Ray Computed Tomography of 3D Crack Lattices in Advanced Ceramics and their Effect on Mechanical Response
Author(s)	James Hogan, Calvin Lo, Haoyang Li, Brendan Koch, Tomoko Sano
On-Site Speaker (Planned)	James Hogan
Abstract Scope	Brittle material fails via crack growth leading to coalescence and fragmentation, and then pulverization into powder. For seismically damaged geomaterials or multi-hit armor applications, material can have significant internal cracks but require reloading to completely fragment. Inducing these damage states produce complex internal structures with significant variability. To address this, computed x-ray tomography obtains a wealth of data on the internal crack networks, allowing for the quantification of damage metrics such as crack volume, orientations, and lengths. Compressive loading to failure obtains the changes in material properties such as stiffness and Poisson’s ratio. Variability in induced microstructure requires repeated characterization and testing, but intensive data collection allows for correlating physical damage to mechanical response. The data intensity of these experiments also allows us to model intact material microstructure as low damage material, transforming uncertainty in intact material properties into an indirect measure of internal defects.
Proceedings Inclusion?	Planned: Supplemental Proceedings volume

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