About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Ceramic Materials for Nuclear Energy Systems
|
| Presentation Title |
Statistical Fracture Behavior of Doped UO2 Using a Ball-On-Ring Test Method |
| Author(s) |
Adrianna E. Lupercio, Brian J. Jaques, Andrew T. Nelson |
| On-Site Speaker (Planned) |
Adrianna E. Lupercio |
| Abstract Scope |
Enhanced nuclear fuel performance necessitates the extension of UO2 fuel operation lifetime and the implementation of Advanced Technology Fuels (ATFs). For the prediction of fuel performance, separate effects data are critical to modeling and simulation efforts. Baseline experimental data are essential to understanding the fracture behavior of doped UO2 fuels, such as transverse rupture strength (TRS). Fracture data for doped UO2 fuel is virtually non-existent due to challenges of machining radiological materials into samples for traditional bend bar tests. This study used a ball-on-ring (BOR) biaxial flexure technique to obtain TRS to establish the statistical fracture behavior of Cr2O3- and TiO2-doped UO2. Weibull parameters and fractography were used to analyze fracture behavior. A 20% reduction in fracture strength was observed for Cr2O3-doped UO2, along with approximately a 16% increase in fracture variability. Results from fracture data indicate the BOR test method is a reliable method for obtaining TRS of ATFs. |