About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
3rd World Congress on Artificial Intelligence in Materials & Manufacturing (AIM 2025)
|
Presentation Title |
Bayesian Calibration and Uncertainty Quantification of a Cohesive Zone Model for Metal-Oxide Interfaces |
Author(s) |
Revanth Mattey, Jason Schulthess, Alexander Swearingen, James I. Cole |
On-Site Speaker (Planned) |
Revanth Mattey |
Abstract Scope |
Plate-type nuclear fuel fabricated through hot isostatic pressing (HIP) consists of a U–10Mo-based fuel foil encapsulated in an aluminum alloy cladding. Understanding the failure mechanisms of these fuel plates is crucial for safe reactor operation. A key potential failure mechanism is de-bonding between the aluminum cladding, which may be exacerbated by second phase precipitates forming along the interface during the HIP fabrication. The precipitates' shape and size, influenced by peak temperatures and cooling rates, can degrade bond strength. To model the degradation, a cohesive zone model is adopted. Calibrating interface properties with a finite element forward model and Bayesian approaches is computationally intensive. Thus, surrogate models like Gaussian Process (GP) regression are developed to predict the mechanical response which are then utilized to calibrate the fracture properties of the interface through Bayesian inversion. The total uncertainty is estimated by combining the forward propagation of parameter uncertainty and model discrepancies. |
Proceedings Inclusion? |
Undecided |