BEHAVIOR OF FIBER REINFORCED PLASTIC LAMINATES UNDER UNIAXIAL, BIAXIAL, AND SHEAR LOADINGS

Abstract

A series of mechanical tests was conducted on fiber glass-epoxy laminates. The loadings used were uniaxial tension; biaxial tension with principal-stress ratios of 1:2, 1:1, and 2:1; and pure shear. The most unique tests were those involving the biaxial loadings. These tests were carried out on a specially designed test fixture using a cable-pulley system in conjunction with a conventional universal testing machine. Data were obtained on the limit strength and apparent ultimate strength of flat laminates subjected to biaxial loading. Under biaxial loading, the parallel-ply lamination arrangement was found to be slightly superior to the cross-ply lamination arrangements. The shear tests were accomplished on thin-walled tubular specimens subjected to pure torsion.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1969
Accession Number
AD0684321

Entities

People

  • Byron L. Mayberry
  • Charles W. Bert
  • John D. Ray

Organizations

  • University of Oklahoma

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Glass Fiber Reinforced Plastics
  • Laminates
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Engineering
  • Mechanical Working
  • Mechanics
  • Micromechanics
  • Modulus Of Elasticity
  • Reinforced Plastics
  • Stress Strain Relations
  • Tensile Strength

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.