| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Providing Anti-counterfeiting Security in Binder Jetting through Tailored Porosity Signatures |
| Author(s) |
Kazi Rahman, Christopher B. Williams |
| On-Site Speaker (Planned) |
Christopher B. Williams |
| Abstract Scope |
The democratization of digital product design, reverse engineering, and distributed fabrication enabled by additive manufacturing (AM) has made it highly vulnerable to counterfeiting. While some anti-counterfeiting measures have been proposed for a number of AM processes, none have been presented for metal binder jetting (BJT). In this work, the authors propose a novel method of anti-counterfeiting security for printed BJT parts wherein tailored regions of porosity are created within a part through selective patterning of binder. Upon sintering, the selectively applied binder forms stochastic regions of porosity within the part volume, which can be identified through non-destructive evaluation. Using this strategy, porous regions can be selectively generated and used as a unique part identifier. Cross-sectional microscopy and x-ray computed tomography verify successful creation of the embedded porous tag, and elucidate the technique’s achievable feature resolution within the volume of a printed copper specimen. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |