Abstract
Interlaminar strength of extrusion-based additively manufactured parts is known to be weaker than the strength seen in the printed directions (X and Y). With Big Area Additive Manufacturing (BAAM), large parts lead to long layer times that are prone to splitting, sometimes referred to as delamination, between the layers. Fiber filled materials, such as carbon fiber reinforced ABS, are used to counteract the effects of thermal expansion by increasing the strength in the X and Y directions. These fibers stay in-plane meaning that no fibers span from layer to layer, which would help counteract the weak interlaminar strength that causes splitting. A solution to this is a patent pending approach called Z-Pinning. The process involves strategically positioning voids across multiple layers that are backfilled with hot extrudate. This paper will explore the benefits and results of using Z-Pinning in large scale additive manufacturing.
| Original language | English |
|---|---|
| Pages | 543-555 |
| Number of pages | 13 |
| State | Published - 2020 |
| Event | 29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018 - Austin, United States Duration: Aug 13 2018 → Aug 15 2018 |
Conference
| Conference | 29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018 |
|---|---|
| Country/Territory | United States |
| City | Austin |
| Period | 08/13/18 → 08/15/18 |
Funding
This material is based upon work supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Office of Advanced Manufacturing, under contract number DE-AC05-00OR22725. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| Advanced Manufacturing Office | DE-AC05-00OR22725 |
| Office of Energy Efficiency and Renewable Energy |
