Studies on the Viscoelastic Behavior of Fiber-Reinforced Plastic.

Abstract

A model for microcrack growth in viscoelastic fibrous composites is developed and incorporated into a viscoelastic constitutive theory. The applicability of this crack propagation analysis for predicting the influence of stress history on failure of composites is then examined. Mechanical behavior of a unidirectional graphite fiber-reinforced epoxy is characterized in terms of the separate effects of constant and transient temperatures, fiber angle, single and multiple cycle loading, and stress level. The nature of the microstructure and a possible crack arrest mechanism are shown in micrographs obtained with a scanning electron microscope. (Author, modified-PL)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1973
Accession Number
AD0773169

Entities

People

  • N. W. Conrad
  • R. A. Schapery
  • S. W. Beckwith

Organizations

  • Texas A&M University

Tags

DTIC Thesaurus Topics

  • Composite Materials
  • Crack Propagation
  • Cracks
  • Electron Microscopes
  • Electrons
  • Graphitic Materials
  • Microscopes
  • Microstructure
  • Optical Equipment
  • Optical Magnification Devices
  • Scanning
  • Scanning Electron Microscopes
  • Unidirectional

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials

Technology Areas

  • Microelectronics