About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Quantifying Machine-Induced Error in a Custom Binder Jet Platform for Radio Frequency Additive Manufacturing |
Author(s) |
Matthew L. McCoy, Keenan Vaughn, Carolyn Conner Seepersad, Christopher J. Saldaņa |
On-Site Speaker (Planned) |
Matthew L. McCoy |
Abstract Scope |
Radio Frequency Additive Manufacturing (RFAM) enables volumetric sintering of doped polymer powders using RF radiation, offering rapid build times and uniform heating. However, part accuracy depends critically on the precision of the mechanical system, sintering mechanics, and process control. This work introduces a methodology to quantify machine-induced errors in a custom binder jet platform developed to study RFAM, while also introducing concepts to improve the printing process to achieve ideal parts. We model error sources from X-axis ball screw gantries, Z-axis piston actuation, recoater blade variation, and printhead droplet placement. Using a laser interferometer and calibration geometries, we experimentally validate each contribution. These are integrated into an error stack model and evaluated. This framework provides a path toward machine-agnostic error correction and establishes a foundation for high-precision RFAM process development, allowing machine errors to be decoupled from the process physics. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |