| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
High-throughput Characterization of Small Crack Growth Behavior in Ti-6-4 |
| Author(s) |
Michelle E. Harr, Bradley Rucker, Devin Blankenship, Ayman Salem, Adam Pilchak, Thomas Broderick, Samuel Kuhr |
| On-Site Speaker (Planned) |
Michelle E. Harr |
| Abstract Scope |
Short crack growth rates are highly stochastic, with short cracks propagating significantly faster than long cracks at similar stress intensities. This anomalous behavior is hypothesized to be related to the local microstructure, but links between local microstructural features and underlying crack growth mechanisms and growth rates is still unknown. We seek to understand microstructural effects on short crack growth behavior in Ti-6Al-4V by developing and utilizing an automated, high throughput fatigue crack growth system. Towards this goal, we have (1) designed and validated an optical monitoring, high-throughput bending fatigue system; (2) developed a CNN to detect, segment, and measure cracks from images; and (3) implemented this system to investigate the crystallographic orientation dependence of small crack growth in Ti-6Al-4V. The small crack growth rates and crack propagation behavior is analyzed to elucidate the effect of the local microstructure on short crack growth rates in Ti-6Al-4V. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Mechanical Properties, |