About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Modeling, Simulation and Artificial Intelligence
|
| Presentation Title |
F-26: Enhancing Binder Jetting Performance: A Multi-Scale Numerical Approach to Residual Porosity Reduction |
| Author(s) |
Valerio Lampitella, Christina Schenk, Ignacio Romero, Damien Tourret |
| On-Site Speaker (Planned) |
Valerio Lampitella |
| Abstract Scope |
Binder jetting is a promising Additive Manufacturing (AM) technique that enables the fabrication of complex geometries with reduced material waste and no need for extreme thermal cycles typical of fusion-based methods. However, residual porosity remains a key limitation, stemming from incomplete understanding of the process’s multiscale, multiphysics nature. This study introduces a novel framework combining the Discrete Element Method (DEM) and Phase Field (PF) modeling to investigate sintering mechanisms. DEM simulates powder spreading to determine the state of the powder bed, which is fed into a PF model based on a grand potential approach. The PF model captures porosity evolution during sintering, explicitly accounting for the influence of binder residues on volume, surface, and grain boundary diffusion. To improve model fidelity, a Bayesian calibration framework is applied to infer key parameters and quantify uncertainty. This integrated approach advances predictive modeling for binder jetting, paving the way for defect-minimized, high-performance components. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Powder Materials |