Effects of Applied Stress and Temperature on the Nonlinear Elastic Properties of Graphite Fibers.

Abstract

The nonlinear elastic behavior of a series of pitch-based graphite fiber bundles was determined by using a new measurement method that uses laser-generated ultrasound over ranges of temperature and static tensile stress. From these data, plots are presented of the Young's modulus versus stress and temperature. The modulus increases with static tensile stress and decreases with temperature. These results are important for characterizing the elastic behavior of composites in which these fibers are used. Some possible mechanisms for explaining the observed effects are discussed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1987
Accession Number
ADA194469

Entities

People

  • Hao Jiang
  • John M. Liu
  • Petar Arsenovic
  • Ronald K. Eby

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Carbon Fibers
  • Circuit Boards
  • Classification
  • Composite Materials
  • Elastic Properties
  • Engineered Materials
  • Graphitic Materials
  • Materials
  • Materials Laboratories
  • Materials Science
  • Military Research
  • Modulus Of Elasticity
  • Schematic Diagrams
  • Security
  • Temperature Gradients
  • Tensile Stress

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Directed Energy