Mechanical and Thermomechanical Properties of NC Base Propellants

Abstract

Compressive mechanical properties have been investigated as a function of temperature and strain rate for a modified double base propellant (JA2) and comparison made with similar studies for a triple-base propellant. Measurements were made at strain rates of 10 sec(-1) and 10 (-3) sec (-1) and temperatures of 80 C to -60 C. At the higher strain rate, the double-base propellant shows ductile behavior at 20 C and brittle failure at the low temperature. However, comparison with triple-base propellants indicates that this double-base propellant. While the ductile-to-brittle transition can be related to a glass type transition temperature, the difference in fragmentation is apparently related to composition and structure. The relationship of ductile and brittle failure to abnormal burning and the related unsafe gun firing conditions is discussed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1991
Accession Number
ADA243045

Entities

People

  • D. A. Wiegand
  • James O. Pinto
  • S. Nicolaides

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Closed Bomb Tests
  • Double Base Propellants
  • Engineering
  • Liquid Explosives
  • Low Temperature
  • Material Degradation Processes
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Phase Transformations
  • Physical Properties
  • Propellants
  • Strain Rate
  • Thermal Analysis
  • Transition Temperature
  • Transitions
  • Triple Base Propellants

Readers

  • Powder metallurgy of Titanium alloys.
  • ballistics.