SAMPE Journal - November/December 2021 - 78
FEATURE
LARGE SCALE
ADDITIVE MANUFACTURING
Photo courtesy of ORNL Website
Dual Material System for Polymer Large Scale
Additive Manufacturing
Tyler Smith1,3,4, Ahmed Arabi Hassen1,3, Randall Lind2,3
Jordan Failla2,3
, Chad Duty3,4, Lonnie Love2,3
, John Lindahl1,3, Phillip Chesser2,3
, Vlastimil Kunc2,3
1Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN
2Energy & Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN
3Manufacturing Demonstration Facility, Oak Ridge National Laboratory, Oak Ridge, TN
4
Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville, TN
Email: smithtc@ornl.gov
ABSTRACT
B
, Alex Roschli2,3
, Vipin Kumar1,3, Vidya Kishore2,3
, Brian Post2,3
,
ig Area Additive Manufacturing (BAAM) technology allows for manufacturing of large-scale objects with a
potential to reduce energy embedded in products, reduce or eliminate energy necessary for transportation
of goods along with reducing the lead time and cost in some cases. Over the last few years, Oak Ridge
National Laboratory (ORNL) has been focusing on large-scale printing of single material systems, typically
un-reinforced or short fiber reinforced polymers, in order to address needs in stiffness-limited applications.
This paper describes the development of a multi-material large-scale AM system through a collaboration with
Cincinnati Inc. and Performance Feed Screw Inc. Modifications to the Big Area Additive Manufacturing (BAAM)
system includes a new extruder design to accommodate a dual feed system, an expanded two-dryer system
with a capacity of 273 kg/dryer, and a system that is capable of mixing pelletized materials up to 60Kg/hr. This
article highlights the advantages and limitations of the multi-material system as well as potential applications.
78 | SAMPE JOURNAL | NOVEMBER/DECEMBER 2021
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SAMPE Journal - November/December 2021
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