Directional shock diode behavior through the interaction of geometric voids in engineered polymer assemblies
Abstract
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. Here, 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 28, 2020
- Source ID
- 10.1063/5.0029835
Entities
People
- Andrew Abbott
- Brittany Branch
- Christopher Neel
- Dana M. Dattelbaum
- David Lacina
- Geoff Frank
- Jonathan Spowart
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory
- Los Alamos National Laboratory
- Sandia National Laboratories
- University of Dayton