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Title: Weak-shock wave propagation in polymer-based particulate composites

Abstract

Shock waves are common in polymer-based particulate composites that are subjected to intermediate to high-velocity impact loading. However, quantitative information on the spatial variation of stress, particle velocities, and energy dissipation during the formation and propagation of weak-shock waves is limited. In this paper, a systematic experimental study is conducted to understand the characteristics of weak-shocks in polymer-bonded particulate composites. Specimens made of polymer-bonded sugar were subjected to a projectile impact loading, at varying velocities, using a modified Hopkinson pressure bar apparatus. Full-field displacement and strains of the deformed samples were obtained with the help of an ultrahigh-speed imaging and digital image correlation technique. Using the full-field displacement data, the shock wave velocity, shock front thickness, and the full-field stress fields are calculated. From the spatial stress field and the strain rate data, the spatial energy dissipation profile is also estimated. The effect of impact velocity on the spatial stress profile, shock wave velocity, and energy dissipation are discussed.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1];  [2]
  1. Univ. of South Carolina, Columbia, SC (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1507336
Report Number(s):
LA-UR-18-30433
Journal ID: ISSN 0021-8979
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 125; Journal Issue: 14; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Ravindran, S., Tessema, A., Kidane, A., and Jordan, J. Weak-shock wave propagation in polymer-based particulate composites. United States: N. p., 2019. Web. doi:10.1063/1.5081035.
Ravindran, S., Tessema, A., Kidane, A., & Jordan, J. Weak-shock wave propagation in polymer-based particulate composites. United States. doi:10.1063/1.5081035.
Ravindran, S., Tessema, A., Kidane, A., and Jordan, J. Tue . "Weak-shock wave propagation in polymer-based particulate composites". United States. doi:10.1063/1.5081035.
@article{osti_1507336,
title = {Weak-shock wave propagation in polymer-based particulate composites},
author = {Ravindran, S. and Tessema, A. and Kidane, A. and Jordan, J.},
abstractNote = {Shock waves are common in polymer-based particulate composites that are subjected to intermediate to high-velocity impact loading. However, quantitative information on the spatial variation of stress, particle velocities, and energy dissipation during the formation and propagation of weak-shock waves is limited. In this paper, a systematic experimental study is conducted to understand the characteristics of weak-shocks in polymer-bonded particulate composites. Specimens made of polymer-bonded sugar were subjected to a projectile impact loading, at varying velocities, using a modified Hopkinson pressure bar apparatus. Full-field displacement and strains of the deformed samples were obtained with the help of an ultrahigh-speed imaging and digital image correlation technique. Using the full-field displacement data, the shock wave velocity, shock front thickness, and the full-field stress fields are calculated. From the spatial stress field and the strain rate data, the spatial energy dissipation profile is also estimated. The effect of impact velocity on the spatial stress profile, shock wave velocity, and energy dissipation are discussed.},
doi = {10.1063/1.5081035},
journal = {Journal of Applied Physics},
number = 14,
volume = 125,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
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This content will become publicly available on April 9, 2020
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