ULTIMATE AND PSEUDO-EQUILIBRIUM TENSILE PROPERTIES OF IRRADIATED ELASTOMERS

Abstract

IT IS SHOWN THAT THE PSEUDO-EQUILIBRIUM STRESSSTRAIN BEHAVIOR AND ULTIMATE STRENGTH OF A NUMBER OF COMMERCIALLY PREPARED AND REACTOR-IRRADIATED VU CANIZATES (silicones, polyurethanes, natural rubber, NR-neoprene, and NR-SBR blends) follow, in good approximation, the empirically developed relationship tau/(2(alpha-alpha to the minus 2nd power)) equals CD to the A power, where tau is the stress or ultimate tensile strength in psi (with reference to the undeformed cross section) at extension ratio alpha, D is the absorbed dose in megarads, and C and A are constants. In the cases investigated, A varied from near zero to 0.5. This relationship is compared with a similar expression developed by Charlesby et al (The Rheology of Elastomers, pp. 129-149, Pergamon Press, 1958), and with the Andrade creep function. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1962
Accession Number
AD0284915

Entities

People

  • E.g. Fritz
  • P.m. Johnson

Organizations

  • General Dynamics

Tags

DTIC Thesaurus Topics

  • Amorphous Materials
  • Elastomers
  • Macromolecules
  • Materials
  • Materials Science
  • Mechanical Properties
  • Molecules
  • Natural Rubber
  • Neoprene
  • Physical Properties
  • Polymers
  • Polyurethanes
  • Rheology
  • Rubber
  • Tensile Properties
  • Tensile Strength

Readers

  • Analytical Mechanics
  • Mechanical Engineering/Mechanics of Materials.
  • Nuclear and Radiation Engineering.