About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
In-situ Dynamic Stress Field Detection using 2D Mechanical Raman Spectroscopy |
| Author(s) |
Abhijeet Dhiman, Hao Wang, Vikas Tomar |
| On-Site Speaker (Planned) |
Abhijeet Dhiman |
| Abstract Scope |
Mechanical Raman spectroscopy has been developed as an analytical method for in-situ of stress induced inside microstructure. Over the years, mechanical Raman spectroscopy has been used for stress detection at a single point. The detection of stress field over an area requires translation of sample using electronics and is limited for steady state experiments. This work involves a unique setup where Raman spectrum is obtained over an area using a two dimensional laser array system with resolution of 5 μm. The reflected Raman signal is collected into a 2D array of optical fibers using a complex optics system. This 2D signal is flattened into a line array which is processed by a Raman spectrometer. This works involve first ever measurement of stress field for varying strain rate. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |