| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
Acoustic Emission Measurements During In-situ Scanning Electron Microscopy Experiments to Quantifying Damage Accumulation and Crack Initiation in Microcrystals |
| Author(s) |
Mostafa Omar, Steven Lavenstein, Jaafar A. El-Awady |
| On-Site Speaker (Planned) |
Jaafar A. El-Awady |
| Abstract Scope |
We present a new methodology, coupling between acoustic emission measurements and in situ scanning electron microscopy experiments, to quantify the evolution of damage and crack initiation in microcrystals. The mechanical properties are continuously monitored during the loading using dynamic measurements and signal analysis. This new methodology is used to quantify the statistics associated with strain bursts in single crystal Ni microcrystals as predicted from the loading tip displacements and the acoustic emission measurements. Statistics associated with dislocation plasticity versus those associated with crack initiation and propagation are also quantified. Finally, the effect of the crystal size on the acoustic emission measurements are discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |