About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Mechanical Behavior at the Nanoscale VII
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Presentation Title |
Exploring Micro-/Nano- Mechanical Behavior at Extreme Strain Rates |
Author(s) |
Lalith Kumar Kumar Bhaskar, Bárbara Bellón, Dipali Sonawane, Hendrik Holz, Damian Frey, Laszlo Petho, Johann Michler, Gaurav Mohanty, Gerhard Dehm, Rajaprakash Ramachandramoorthy |
On-Site Speaker (Planned) |
Lalith Kumar Kumar Bhaskar |
Abstract Scope |
Dynamic testing of materials at the macro scale has been extensively explored in the past to study their mechanical properties at extremely high strain rates, typically beyond 1000/s. Similarly, at the micron scale, given the strong push towards miniaturization in applications, obtaining dynamic properties of materials at the micro-scale has become critical. However, subjecting microscale materials to harsh high strain rate loading conditions in a controllable way requires sophisticated and customized electronic hardware.
In this presentation, a highly customized piezo-based high-speed micromechanical experimental setup will be introduced which allows dynamical testing at the micro-scale. The state-of-the-art electronic hardware needed for acquiring high-speed electrical signals, experimental protocols and analysis methodology necessary for obtaining high-fidelity load-displacement signals during indentations and micropillar compressions beyond 1000/s will be described. Finally, initial results from ultra-high strain rate nanoindentation and micropillar compression experiments carried out on fused silica and nanocrystalline nickel will be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, |