About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Effect of Microstructure and Strain-rate on the Out-of-plane Compressive Response of UHMWPE Composites |
Author(s) |
Jason Parker, KT Ramesh |
On-Site Speaker (Planned) |
Jason Parker |
Abstract Scope |
We study the microstructure evolution of UHMWPE (Ultra-High Molecular Weight Polyethylene) composites during dynamic loading. DyneemaŽ laminates are consolidated at multiple pressures, the microstructure is characterized with micro X-ray Computed Tomography CT (micro CT), and they are tested in uniaxial out-of-plane compression at strain rates ranging from 10-3 s-1 - 103 s-1 while simultaneously capturing the deformation history with high speed video. Image analysis is performed on the resulting high-speed video to measure the lateral deformation of the specimen. Combined with the axial deformation history, obtained from the Kolsky bar, we obtain the complete deformation gradient. Using a finite deformation formulation, we calculate volume change as a function of time and relate this to microstructure evolution in the specimen. This technique is used to study the influence and evolution of microstructure on UHMWPE composites loaded at strain-rates up to 3000 s-1. |
Proceedings Inclusion? |
Planned: |
Keywords |
Composites, Polymers, Other |