About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Ceramic-Based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Development of Models for Densification and Microstructural Evolution of Ceramic Green Bodies Produced by Direct Ink Writing |
| Author(s) |
Deeksha Kodangal, Nikhil Dhanankam, Rajendra Bordia, Ulf Schiller |
| On-Site Speaker (Planned) |
Deeksha Kodangal |
| Abstract Scope |
The green structures formed by direct ink writing (DIW or Robocasting) technique exhibit distinctly different microstructure compared to conventionally processed green bodies specifically, anisotropy and low green density. Hence, the validated sintering models at both meso- scale and continuum scale must be revised to accommodate these inherent differences in green microstructure. A 45 vol% Alumina slurry was prepared in DI water and cylindrical samples were made by slip casting to serve as baseline for isotropic model. The densification and microstructural evolution were observed under different thermal treatments, which are used to extract the constitutive parameters for isotropic sintering models. The microstructure data were used to train machine learning models to predict densification and microstructure for samples sintered under arbitrary thermal history. These are compared to the anisotropic constitutive parameters and microstructural evolution for DIW samples of significantly lower green density. |