Constant Critical Strain for Mechanical Failure of Several Particulate Polymer Composite Explosives and Propellants and Other Explosives.

Abstract

The mechanical response in compression of several polymer composite explosives and propellants and two other explosives was determined as a function of temperature and strain rate. The compressive strength (maximum stress) and the apparent modulus increase with decreasing temperature and increasing strain rate, are proportional to each other. While the compressive strength and the modulus vary by about an order of magnitude, the strain at the maximum stress is approximately constant with variations of strain rate and temperature. This approximately constant strain can be used as a criterion for failure, and suggests a critical local strain or displacement for failure.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1997
Accession Number
ADA327298

Entities

People

  • Donald A. Wiegand

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Counter IED
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Composite Materials
  • Composite Propellants
  • Compressive Strength
  • Engineering
  • Explosives
  • Failure Mode And Effect Analysis
  • Low Temperature
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Particulates
  • Polymer Matrix Composites
  • Propellants
  • Rdx
  • Strain Rate

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials
  • Rocket Propulsion.