| About this Abstract |
| Meeting |
2025 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 |
Strain Rate Sensitivity: A Comparative Analysis of Nanoindentation and Split Hopkinson Bar Measurement Techniques
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| Author(s) |
Daniel O. Lewis, James D Paramore, Brady G Butler, Nicole Person, Christopher Walker, George Pharr |
| On-Site Speaker (Planned) |
Daniel O. Lewis |
| Abstract Scope |
The strain rate dependencies of mechanical properties are important in understanding and predicting how materials will behave. These dependencies apply across a wide range of scenarios from high speed impact displaying ballistic strain rates to nearly static long term creep tests. Despite the prevalence of rate effects, there are still significant hurdles in measuring strain rate sensitivity. White the Split Hopkinson pressure bar test is considered the standard for reliable measurement of strain rate sensitivity exponents, constraints like sample size and low throughput limit its application. Nanoindentation is an attractive alternative to split Hopkinson bar with multiple methods for measuring rate sensitivity. However, varying methods often produce varying results. This study aims to clarify whether nanoindentation could be used to reliably produce strain rate sensitivity measurements analogous to those measured by Split Hopkinson bar. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, |