Effect of crystal density on dynamic deformation behavior of PBX

Suraj Ravindran, Addis Tessema, Addis Kidane

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Polymer bonded explosives (PBX) are heterogeneous materials that contain solid loading varying from 80 to 95 % and bound together by 5-20 % soft binder. An experimental investigation is performed to study the effect of crystal solid loading on the failure process of PBX subjected to dynamic loading at different strain rates. Model materials, with sugar crystals and binder, are fabricated with solid loading varying from 80 to 95 %. Then dynamic compression experiments are performed on each specimens using split Hopkinson pressure bar. During loading, the deformation is captured using the high-speed camera at 1 million frames/s. Digital image correlation technique is used to obtain the local and full field deformation and strain fields at each strain rate. Based on the local deformation field and the load data, the failure process of each sample are investigated, and the effect of solid loading on the strain localization and failure mode of the PBX is discussed.

Original languageEnglish (US)
Title of host publicationChallenges in Mechanics of Time Dependent Materials- Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics
EditorsJevan Furmanski, H. Jerry Qi, Alex Arzoumanidis, Alireza Amirkhizi, Meredith Silberstein, Hongbing Lu, Bonnie Antoun
PublisherSpringer New York LLC
Pages87-92
Number of pages6
ISBN (Print)9783319415420
DOIs
StatePublished - 2017
Externally publishedYes
EventAnnual Conference and Exposition on Experimental and Applied Mechanics, 2016 - Orlando, United States
Duration: Jun 6 2016Jun 9 2016

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume2
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceAnnual Conference and Exposition on Experimental and Applied Mechanics, 2016
Country/TerritoryUnited States
CityOrlando
Period6/6/166/9/16

Bibliographical note

Funding Information:
The financial support of Air Force Office of Scientific Research (AFOSR) under Grant No FA9550-14-1-0209 is gratefully acknowledged.

Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2017.

Keywords

  • DIC
  • Dynamic
  • Meso-scale
  • Polymer bonded explosive
  • Strain localization

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