Environmental Stress Crazing and Cracking of Transparent Polymers

Abstract

The resistance to crack and growth in polycarbonate and poly(methyl methacrylate) is evaluated with several surface active solvents including a component of the universal chemical warfare decontaminant, DS2. A static dead weight loading apparatus is used for experimentation, and linear elastic fracture mechanics (LEFM) is used to interpret craze initiation and crack propagation via compact tension tension specimens. Results reflect relationships based on solubility parameters of the solvents and the polymers. Various structural effects due to environmentally induced degradation of these amorphous thermoplastics are illustrated.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1989
Accession Number
ADA205624

Entities

People

  • Alex J. Hsieh
  • Janice J. Vanselow

Tags

Communities of Interest

  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Alkenes
  • Amorphous Materials
  • Crack Propagation
  • Cracks
  • Engineering
  • Fracture (Mechanics)
  • Material Degradation Processes
  • Materials
  • Mechanics
  • Military Research
  • Molecular Orbital Theory
  • Munitions
  • Plastics
  • Polymers
  • Thermoplastic Resins
  • Warfare

Readers

  • Materials Science (Mechanical Engineering).
  • Polymer Science and Technology
  • Structural Health Monitoring of Composite Structures.