Analysis of Ballistically Caused Damage in Some Test Panel Fibers

Abstract

In this report we describe microscopic and X-ray diffraction methods to analyze ballistically induced damage to fibers and yarns within multilayer panels of Spectra-900 and Spectra-1000 polyethylene and Kevlar. Microscopic evaluation by scanning electron microscopy showed heat-induced damage in fibers several layers beyond the layer in which the .22-caliber projectile came to rest, and X-ray diffraction showed crystallinity differences in fibers close to and at some distance from the point of ballistic impact. Polarization microscopy was used to corroborate the X-ray diffraction findings, by elucidating differences in birefringence within the fibers.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1992
Accession Number
ADA252220

Entities

People

  • Abram King
  • C. R. Desper
  • Robert A. Prosser
  • Samuel H. Cohen

Organizations

  • United States Army Soldier Systems Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Cold Working
  • Crystal Structure
  • Diffraction
  • Electron Microscopy
  • Heat Energy
  • Materials
  • Mechanical Working
  • Mechanics
  • Microscopes
  • Microscopy
  • Scanning Electron Microscopy
  • Spectra
  • Stress Strain Relations
  • Stresses
  • Tensile Strength
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Reinforced Composite Materials
  • ballistics.

Technology Areas

  • Microelectronics