A Fundamental Investigation into the Deformation and Failure Behavior of Heterogeneous Materials with the Aim of Developing Design Guidelines

Abstract

Using the biomimetic idea of gradual changes in the orientation of subsequent layers in fiber reinforced materials, we have developed a helicoidal composite material. In this material, the orientation in each subsequent layer is changed only by 10 degrees; this results in a graded composite material, with significantly reduced interlaminar shear stresses that drive delamination. The mechanisms of failure has been investigated; the material is shown to possess superior mechanical properties under both static and dynamic loading conditions.

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Document Details

Document Type
Technical Report
Publication Date
Jul 29, 2004
Accession Number
ADA425797

Entities

People

  • Krishnaswarmy Ravi-chandar

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Micromechanics
  • Modulus Of Elasticity
  • Shear Stresses
  • Stress Strain Relations
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Structural Health Monitoring of Composite Structures.
  • Thin Film Deposition Science.

Technology Areas

  • Biotechnology