| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale VII
|
| Presentation Title |
Development of Mechanical Spectroscopy Techniques using Nanoindentation |
| Author(s) |
Joseph Jakes, Donald S Stone |
| On-Site Speaker (Planned) |
Joseph Jakes |
| Abstract Scope |
Mechanical spectroscopy is the assessment of a mechanical index, such as plastic flow stress or viscoelastic moduli and mechanical damping, across a broad range of one or more variables including time scale, deformation rate, temperature, and moisture content. With nanoindentation-based mechanical spectroscopy it is possible to generate copious amounts of data from specimens that are otherwise difficult to characterize because of microscopic volume, brittleness, or awkward shape. We have developed techniques using quasistatic and dynamic nanoindentation to measure plastic flow stress over 4-6 decades of strain rate and viscoelastic properties across greater than 4 decades of time scale. The techniques are robust and can be applied to a wide range of materials because they were developed with minimal assumptions about material behavior. A key to their development was also careful independent measurements of contact areas. Examples will be given for metals, inorganic glasses, and both synthetic and natural polymeric materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Polymers, Characterization |