About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
L-50: Multiscale Mechanical Evaluation of FiberForm |
Author(s) |
Robert Quammen, Paul F. Rottmann, Connor Varney |
On-Site Speaker (Planned) |
Robert Quammen |
Abstract Scope |
Porous structures have shown promise for Thermal Protection System applications owing to their attractive functional properties. However, the constitutive properties of porous materials remain poorly understood due to their highly heterogeneous structure. Current computational research is attempting to model these relationships on both the ‘bulk’ and ‘local’ scale. In this work, compression tests have been conducted on rectangular FiberForm specimens using a custom microscale mechanical testing system to determine ‘bulk’ properties. Digital image correlation (DIC) was used to calculate full 2D local and average strain maps live during the course of the tests. To determine ‘local’ microscale properties of FiberForm samples, in-situ nanoindentation was utilized. SEM characterization pre- and post-indentation has been conducted and DIC strain analysis was employed to visualize critical features in the porous microstructure. These combined results will be useful to experimentally validate and inform evolving computational models of porous materials. |
Proceedings Inclusion? |
Planned: |