Effect of Fiber-Matrix Interphase on Transverse Tensile Strength and Fracture Resistance of Organic Composite Materials.

Abstract

Unidirectional fiber reinforced composites have a very low transverse tensile strength. This strength is much lower than the strength of the pure matrix and limits the performance of the composite system. The objective of this IR program is to develop analytical methods which predict the transverse tensile failures of organic composites and to examine how various parameters influence the transverse tensile strength and failure modes. Analytical methods developed in this study included micromechanical models for the composite without initial microcracks and micromechanical models for the composite with initial microcracks. Through these models, local stress distribution, stress intensity factor, and thermal residual stresses were calculated. Guidelines and design charts for the improvement of the transverse tensile strength were also developed. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Sep 04, 1993
Accession Number
ADA292805

Entities

People

  • Annette Arocho
  • Hsi C. Tsai

Organizations

  • Naval Air Warfare Center Aircraft Divison

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerial Warfare
  • Air Force
  • Aircrafts
  • Composite Materials
  • Engineering
  • Failure Mode And Effect Analysis
  • Materials
  • Mechanics
  • Military Aircraft
  • Military Research
  • Residual Stress
  • Stress Intensity Factors
  • Stress Strain Relations
  • Stresses
  • Tensile Strength
  • Two Dimensional
  • United States Naval Academy

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.