| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|
| Presentation Title |
Binder Jetting and Characterization of Porous Structures |
| Author(s) |
Pierangeli Rodriguez de Vecchis, Andrew Zilavy, Teddi Sedlar, Markus Chmielus |
| On-Site Speaker (Planned) |
Markus Chmielus |
| Abstract Scope |
While porosity is an undesired microstructural feature in many structural materials due to its impact on mechanical properties, especially fatigue behavior, the research presented here will focus on how to design, modify, and characterize porous structures manufactured via binder jet 3D printing. While this work was initially motivated by the COVID-19 pandemic as a method to potentially produce reusable metal N95 mask filters, applications of printed porous structures are reaching beyond filtration applications.
We will be showing how the intrinsic porous morphology of binder jetted and partially sintered structures can be modified by varying the powder feedstock, and printing and sintering parameters to produce parts with specific microstructures and properties including interconnected porosity, bimodal pore size distribution, characteristic tortuosity, and, for filtration applications especially of interest, particle filtration, and pressure drop. We will finally introduce methods to quantify these characteristics by using cross-sectional destructive and non-destructive methods for 3D measurements. |