Properties of Graphite Fiber Composites at Cryogenic Temperatures

Abstract

An investigation of mechanical properties of several graphite fibers and resins as composite strands, bars, and NOL rings showed that composite moduli increased by 0 to 30%. Bending fatigue at 50% breaking stress and 100 cycles deteriorated rings less when cold than when at room temperature. Thermal contraction tests of composite showed the graphite fibers to have a slight negative coefficient. Combined with resins in composites, the resin matrix would experience up to 1.5% strain when cold due to its thermal contraction. The design, fabrication, and testing of graphite filament wound pressure vessels are reported.

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Document Details

Document Type
Technical Report
Publication Date
May 13, 1970
Accession Number
AD0746885

Entities

People

  • Richard Alfring
  • Robert A. Simon

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Composite Materials
  • Failure Mode And Effect Analysis
  • Fiber Reinforced Composites
  • Flexural Strength
  • Graphitic Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Testing
  • Measurement
  • Mechanical Working
  • Plastic Explosives
  • Pressure Vessels
  • Reinforced Plastics
  • Shear Strength
  • Tensile Strength
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.