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Developing an Alternative to Roma Plastilina #1 as a Ballistic Backing Material for the Ballistic Testing of Body Armor

  • Randy MrozekEmail author
  • Tara Edwards
  • Erich Bain
  • Shawn Cole
  • Eugene Napadensky
  • Reygan Freeney
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Ballistic clay (Roma Plastilina #1; RP1) is currently used as a backing material that is meant to simulate the penetration resistance of the human body during the ballistic testing of body armor. RP1 is a modeling clay with a primary market in the artistic community. Over time, RP1’s formulation and performance have changed to meet the demands of the artistic community. As a result, RP1 must now be heated to 100 °F to obtain the desired response and exhibits a strong temperature-dependent performance such that the backing material is considered out of calibration after 45 min. This presentation will focus on our efforts to develop a replacement for RP1 that exhibits the desired backing material response at room temperature with minimal temperature-dependence. Specifically, the challenges of designing a viscoplastic material with a controlled response that exhibits dimensional stability while providing minimal elastic recovery from deformation even at high strain rates and linking the quasistatic mechanical response with the ballistic performance.

Keywords

RP1 Backing material Clay Ballistic Backface deformation 

References

  1. 1.
    Prather, R.N., Swann, C.L., Hawkins, C.E.: Backface Signatures of Soft Body Armors and the Associated Trauma Effects; ARCSL-TR-77055; DTIC Document: (1977)Google Scholar
  2. 2.
    Lehowicz, L.G.: Phase I Report on Review of the Testing of Body Armor Materials for Use by the U.S. Army: Letter Report. National Academies Press, (2009)Google Scholar
  3. 3.
    Lehowicz, L.G.: Sciences, DEP Testing of Body Armor Materials for Use by the U.S. Army – Phase II: Letter Report. National Academies Press, (2010)Google Scholar
  4. 4.
    Lehowicz, L.G.: Testing of Body Armor Materials: Phase III. National Academies Press (2012)Google Scholar

Copyright information

© The Society for Experimental Mechanics, Inc. 2019

Authors and Affiliations

  • Randy Mrozek
    • 1
    Email author
  • Tara Edwards
    • 1
  • Erich Bain
    • 1
  • Shawn Cole
    • 1
  • Eugene Napadensky
    • 1
  • Reygan Freeney
    • 2
  1. 1.US Army Research Laboratory, APGAberdeenUSA
  2. 2.Aberdeen Test Center, APGAberdeenUSA

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