An Autoradiographic Technique for Studying Crack Growth in Plastics Composite Materials.

Abstract

Preliminary work has been conducted on segments of NOL Rings to study crack propagation characteristics in fiber reinforced plastics composite materials. Samples were submitted to a variety of fatigue loading conditions. They were then immersed in a tritiated water-ethylene glycol solution and after suitable processing, autoradiograms were prepared for analysis. Radiation emanating from the solution retained by the samples indicated that minute cracks and fissures were present in all of the specimens and that the radiation intensity varied in direct proportion to the severity of the fatigue loading conditions When photomicroscopy was used to analyze similar specimens, cracks could be detected only for the most severe test conditions.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1966
Accession Number
ADA307125

Entities

People

  • Marlin A. Kinna

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Biomedical
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • California
  • Chemistry
  • Composite Materials
  • Composite Structures
  • Fabrication
  • Fiber Reinforced Composites
  • Fiber Reinforced Polymers
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • New York
  • Plastics
  • Reinforced Plastics
  • Test Methods
  • United States

Readers

  • Nuclear and Radiation Engineering.
  • Polymer Science and Engineering.
  • Reinforced Composite Materials