Failure Models for Textile Composites.

Abstract

The goals of this investigation were to: identify mechanisms of failure and determine how the architecture of reinforcing fibers in 3D woven composites controlled stiffness, strength, strain to failure, work of fracture, notch sensitivity, and fatigue life and to model composite stiffness, strength, and fatigue life. A total of 11 different angle and orthogonal interlock woven composites were examined. Composite properties depended on the weave architecture, the tow size, and the spatial distributions and strength of geometrical flaws. Simple models were developed for elastic properties, strength, and fatigue life. A more complicated stochastic model, called the 'Binary Model,' was developed for damage tolerance and ultimate failure. These 3D woven composites possessed an extraordinary combination of strength, damage tolerance, and notch insensitivity.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1995
Accession Number
ADA327579

Entities

People

  • Brian M Cox

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Computer Programs
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Micromechanics
  • Modulus Of Elasticity
  • Monte Carlo Method
  • Stress Strain Relations

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.