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Title: X-ray Phase Contrast Imaging of the Impact of Multiple HMX Particles in a Polymeric Matrix

Abstract

The initiation of high explosives (HEs) under shock loading lacks a comprehensive understanding: particularly at the particle scale. One common explanation is the hot spot theory, which suggests that energy in the material resulting from the impact event is localized in a small area causing an increase in temperature that can lead to ignition. This study focuses on the response of HMX particles (a common HE) within a polymer matrix (Sylgard-184 (R)), a simplified example of a polymer-bound explosive (PBX). These PBXs consist of multiple HMX particles in a single polymer-bound sample. A light gas gun was used to load the samples at impact velocities above 400 m/s. The impact events were visualized using X-ray phase-contrast imaging (PCI) allowing real-time observation of the impact event. The experiment used two different types of samples (multi-particle and two crystals) and found evidence of cracking and debonding in both sample types. Additionally, it was found that the multiple particle samples showed similar evidence of damage at lower velocities than that of single particle samples. This is an expected result as the multiple particles add additional interfaces for stress concentration and frictional heating.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [1];  [1]
+ Show Author Affiliations
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); US Department of the Navy, Office of Naval Research (ONR); US Air Force Office of Scientific Research (AFOSR)
OSTI Identifier:
1631995
Alternate Identifier(s):
OSTI ID: 1597169
Grant/Contract Number:  
AC02-06CH11357; N00014-16-1-2557; FA9550-16-1-0315
Resource Type:
Accepted Manuscript
Journal Name:
Propellants, Explosives, Pyrotechnics
Additional Journal Information:
Journal Volume: 45; Journal Issue: 4; Journal ID: ISSN 0721-3115
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; Energetics; HMX; Impact; PCI; Reaction

Citation Formats

Kerschen, Nicholas E., Drake, Jonathan D., Sorensen, Christian J., Guo, Zherui, Mares, Jesus O., Fezzaa, Kamel, Sun, Tao, Son, Steven F., and Chen, Weinong W. X-ray Phase Contrast Imaging of the Impact of Multiple HMX Particles in a Polymeric Matrix. United States: N. p., 2020. Web. doi:10.1002/prep.201900217.
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Kerschen, Nicholas E., Drake, Jonathan D., Sorensen, Christian J., Guo, Zherui, Mares, Jesus O., Fezzaa, Kamel, Sun, Tao, Son, Steven F., & Chen, Weinong W. X-ray Phase Contrast Imaging of the Impact of Multiple HMX Particles in a Polymeric Matrix. United States. https://doi.org/10.1002/prep.201900217
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Kerschen, Nicholas E., Drake, Jonathan D., Sorensen, Christian J., Guo, Zherui, Mares, Jesus O., Fezzaa, Kamel, Sun, Tao, Son, Steven F., and Chen, Weinong W. Tue . "X-ray Phase Contrast Imaging of the Impact of Multiple HMX Particles in a Polymeric Matrix". United States. https://doi.org/10.1002/prep.201900217. https://www.osti.gov/servlets/purl/1631995.
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@article{osti_1631995,
title = {X-ray Phase Contrast Imaging of the Impact of Multiple HMX Particles in a Polymeric Matrix},
author = {Kerschen, Nicholas E. and Drake, Jonathan D. and Sorensen, Christian J. and Guo, Zherui and Mares, Jesus O. and Fezzaa, Kamel and Sun, Tao and Son, Steven F. and Chen, Weinong W.},
abstractNote = {The initiation of high explosives (HEs) under shock loading lacks a comprehensive understanding: particularly at the particle scale. One common explanation is the hot spot theory, which suggests that energy in the material resulting from the impact event is localized in a small area causing an increase in temperature that can lead to ignition. This study focuses on the response of HMX particles (a common HE) within a polymer matrix (Sylgard-184 (R)), a simplified example of a polymer-bound explosive (PBX). These PBXs consist of multiple HMX particles in a single polymer-bound sample. A light gas gun was used to load the samples at impact velocities above 400 m/s. The impact events were visualized using X-ray phase-contrast imaging (PCI) allowing real-time observation of the impact event. The experiment used two different types of samples (multi-particle and two crystals) and found evidence of cracking and debonding in both sample types. Additionally, it was found that the multiple particle samples showed similar evidence of damage at lower velocities than that of single particle samples. This is an expected result as the multiple particles add additional interfaces for stress concentration and frictional heating.},
doi = {10.1002/prep.201900217},
journal = {Propellants, Explosives, Pyrotechnics},
number = 4,
volume = 45,
place = {United States},
year = {Tue Feb 04 00:00:00 EST 2020},
month = {Tue Feb 04 00:00:00 EST 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1002/prep.201900217
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