Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session G20: Matter at Extreme Conditions: Dynamic Experiments
11:30 AM–2:18 PM,
Tuesday, March 7, 2023
Room: Room 212
Sponsoring
Unit:
GSCCM
Chair: Nir Goldman, Lawrence Livermore Natl Lab
Abstract: G20.00008 : Quantifying Shock Response of Additively Manufactured Polymer Materials*
1:18 PM–1:30 PM
Author not Attending
Presenter:
Christopher R. Johnson
(Sandia National Laboratories)
Authors:
Christopher R. Johnson
(Sandia National Laboratories)
Bernardo G Farfan
(Sandia National Laboratories)
Scott Alexander
(Sandia National Laboratories)
Ryan Zarate
(Sandia National Laboratories)
Collaboration:
Sandia National Laboratories
fused deposition modeling (FDM). These advancements have enabled rapid prototyping of
components unattainable using traditional manufacturing techniques. As use of many of these
polymers increase, understanding of the mechanical properties are necessary to select appropriate
applications and model behavior with high fidelity. This work investigates the mechanical
response of two AM polymers subject to shock loading conditions using plate impact
experiments. The AM polymers of interest are tough polylactic acid (Tough PLA) and
polyethylene terephthalate glycol (PETG). Experiments are performed at varied impact velocities
to understand the dynamic response when subject to different stress states. A Mie Grüneisen
equation of state is optimized to best fit experimental results for use in modeling dynamic
response of the polymers.
*Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.
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