| About this Abstract |
| Meeting |
TMS Specialty Congress 2024
|
| Symposium
|
Accelerating Discovery for Mechanical Behavior of Materials 2024
|
| Presentation Title |
High-throughput Vibration-based Fatigue Testing to Produce S-N Curves of HCF Life in an Afternoon |
| Author(s) |
Brandon A. Furman, Jeffrey M. Wagner, Jacob R. Rigby, Jacob B. Heninger, Tate T. Adams, Sam C. Mulhall, Ryan Berke |
| On-Site Speaker (Planned) |
Ryan Berke |
| Abstract Scope |
High cycle fatigue testing is slow and expensive -- for example, a load frame cycling at 40 Hz requires about 70 hours to complete 10^7 cycles, producing only one datapoint on an S-N curve. Consequently, designers of fatigue-sensitive systems often resort to outdated materials that have been qualified by regulators and cannot take full advantage of new advances in material science. As an alternative to axial testing, vibration-based methods operate on the order of kHz, completing the same 10^7 cycles in about 2-3 hours. This can be further accelerated by shaking multiple specimens simultaneously and incorporating Digital Image Correlation to monitor strains independently in each specimen. The DIC data additionally monitors fatigue crack growth in each specimen. Under this approach, a fatigue testing campaign that would previously have taken months of effort to execute can now complete in an afternoon, which will greatly accelerate the development of fatigue-resistant alloys. |
| Proceedings Inclusion? |
Definite: Other |