Fundamentals of Interfacial Strength in Composite Materials

Abstract

Research in the third program year has examined fatigue and toughness behavior of composites with 6061 and 7090 or 7191 alloy matrix material, with the goal being better understanding of relationships between microstructure and mechanical properties of these matrices with particulate SiC reinforcement. Tensile and Fatigue testing results, in air and in corrosive environments, of the various microstructures (i.e. aging conditions) chosen are presented, along with toughness results and finite-element studies to interpret the observed toughness levels. The strong microstructural dependence of mechanical properties is emphasized, along with possible avenues for improvement of these properties. (js)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1990
Accession Number
ADA226701

Entities

People

  • A. W. Thompson
  • I. M. Bernstein

Organizations

  • Carnegie Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Chemistry
  • Composite Materials
  • Cracks
  • Elastic Properties
  • Engineering
  • Hardness
  • Materials
  • Materials Engineering
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Modulus Of Elasticity
  • Particles
  • Strain Hardening
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Systems Analysis and Design