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Directional shock diode behavior through the interaction of geometric voids in engineered polymer assemblies

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/5.0029835· OSTI ID:1763130
 [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Univ. of Dayton Research Inst., Dayton, OH (United States); Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)
  3. Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States); Univ. of Dayton Research Inst., Dayton, OH (United States)
  4. Univ. of Dayton Research Inst., Eglin Air Force Base, FL (United States)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Air Force Research Lab., Eglin Air Force Base, FL (United States)
  7. Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)

With the advent of additive manufacturing (AM) techniques, a new class of shockwave mitigation and structural supports has been realized through the hierarchical assembly of polymer materials. To date, there have been a limited number of studies investigating the role of structure on shockwave localization and whether AM offers a means to tailor shockwave behavior. Of particular interest is whether the mesoscopic structure can be tailored to achieve shockwave properties in one direction of impact vs the other. In this work, we illustrate directional response in engineered polymer foams. In situ time-resolved x-ray phase contrast imaging at the Advanced Photon Source was used to characterize these diode-like structures. This work offers a breakthrough in materials technology for the development of protective structures that require augmentation of shock in one direction while diminishing transmission in the opposite direction.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); US Air Force Office of Scientific Research (AFOSR)
Grant/Contract Number:
NA0002442; NA0003525
OSTI ID:
1763130
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 24 Vol. 128; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

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