Direct-write additive manufacturing of polymer and ceramic composites
November 10-14, 2019
Extrusion-based additive manufacturing (AM) technologies – including fused filament fabrication (FFF) and direct ink writing (DIW) – present opportunities to create composite materials and multi-material architectures that cannot be made using other AM technologies. The direct deposition nature of these processes enable the straightforward deposition of multiple materials though the use of multiple print heads, while the extrusion process preferentially aligns high aspect ratio filler materials like fibers, whiskers, and platelets. This alignment, coupled with the flexibility to choose the print path for each layer provides the ability to prescribe unique fiber arrangements within printed parts.
This talk will focus on recent developments in understanding the relationship between filler morphology, ink rheology, print parameters (i.e. nozzle size and print speed), and the resulting mechanical properties of printed epoxy composites. Novel deposition strategies to print hybrid composite/foam architectures and to control fiber orientation will also be discussed. Finally, the talk with conclude with a brief description of our current work applying the printing strategies developed for epoxy composites to preceramic polymer resins for the creation of high temperature ceramic composites. Current challenges and open questions will be highlighted throughout the talk.
Brett Compton, "Direct-write additive manufacturing of polymer and ceramic composites" in "Composites at Lake Louise 2019", John Kieffer, University of Michigan, USA Erik Spoeke, Sandia National Laboratories, USA Meisha Shofner, Georgia Institution of Technology, USA Eds, ECI Symposium Series, (2019). https://dc.engconfintl.org/composites_all_2019/51