A Study of the Fatigue Behavior of Fiber Reinforced Composites

Abstract

The fatigue failure of graphite fiber reinforced nylon is influenced by both the technique of fabrication of the composite and environmental conditions. Compression molded materials exhibited an isothermal brittle fatigue failure through initiation and propagation of cracks. Injection molded materials were non-linear, exhibiting ductile flow prior to ultimate failure. It is postulated that localized flow at a crack tip caused thermal melting, leading to a thermally induced fatigue failure. This study indicated that processing characteristics such as fiber breakage, overlap and orientation strongly influence the fatigue endurance of the products.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1977
Accession Number
ADA065152

Entities

People

  • A. T. Dibenedetto
  • Gideon Salee

Organizations

  • University of Connecticut

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Biocomposites
  • Composite Materials
  • Data Analysis
  • Fiber Reinforced Composites
  • Information Processing
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Plastics
  • Reinforced Plastics
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Fluid Dynamics.
  • Polymer Science and Technology
  • Structural Health Monitoring of Composite Structures.