SAMPE Journal - September/October 2019 - 13

Figure 7. a) Yielding behavior of layer 9 due to the initial temperature
spike, followed by deposition of layer 10. b) Full successfully printed wall.
c) Normalized max temperature and time to Tc vs. layer to identify yield
criteria.

and adiabatic gel time in order to define a set of
yielding criteria to predict when prints are expected
to fail.
The next stage of this work will include the
development of a thermomechanical model that
can guide the selection of print parameters based
on the reaction kinetics and viscoelastic properties
of the feedstock material to avoid print failure.

4. Duty, C.E., et al., "Structure and mechanical behavior
of Big Area Additive Manufacturing (BAAM) materials."
Rapid Prototyping Journal 23 (2017): 181-189. https://doi.
org/10.1108/RPJ-12-2015-0183
5. Compton, B.G., et al., "Thermal analysis of additive
manufacturing of large-scale thermoplastic polymer
composites." Additive Manufacturing 17 (2017): 77-86.
6. Hmeidat, N.S., J.W. Kemp, and B.G. Compton, "High-

ACKNOWLEDGMENTS
Research sponsored by the U.S. Department of
Energy, Office of Energy Efficiency and Renewable
Energy, Industrial Technologies Program, under
contract DE-AC05-00OR22725 with UT-Battelle,
LLC.

strength

epoxy

nanocomposites

for

3D

printing."

Composites Science and Technology 160 (2018): 9-20.
https://doi.org/10.1016/j.compscitech.2018.03.008
7. Compton, B.G. and J.A. Lewis, "3D Printing of
Lightweight Cellular Composites." Advanced Materials
26

(2014):

5930-5935.

https://doi.org/10.1002/

adma.201401804
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https://doi.org/10.1108/RPJ-12-2015-0183 https://doi.org/10.1108/RPJ-12-2015-0183 https://www.doi.org/10.1016/j.compscitech.2018.03.008 https://doi.org/10.1002/adma.201401804 https://doi.org/10.1002/adma.201401804 https://www.doi.org/10.1002/adfm.200600434 http://www.sampe.org

SAMPE Journal - September/October 2019

Table of Contents for the Digital Edition of SAMPE Journal - September/October 2019