THE TENSILE PROPERTIES OF A POLYURETHANE PROPELLANT, UP 2,

Abstract

A sample of a polyurethane propellant, designated UP 2, has been characterised in uniaxial tension using time-temperature superposition principles, over wider ranges of strain-rate and temperature than have been used previously. Near the embrittlement temperature the true strain (photographically determined) rapidly becomes much less than the nominal strain. Consideration of nominal strains can thus be misleading. Under the conditions of rocket ignition at low temperatures the true strain is rapidly decreasing, and the true modulus increasing, with decreasing temperature. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 20, 1968
Accession Number
AD0683183

Entities

People

  • R. W. Bryant
  • W. A. Dukes

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Embrittlement
  • Ignition
  • Low Temperature
  • Material Degradation Processes
  • Materials
  • Polyurethanes
  • Propellants
  • Strain Rate
  • Tensile Properties

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Rocket Propulsion.
  • Systems Analysis and Design