Damage Initiation in the Short Beam Shear Test of Composite Materials Using Stiffness Reduction.

Abstract

The purpose of this study was to analyze damage initiation in the short beam shear test for composite materials. This thesis proposes a means of predicting damage initiation in a composite beam using finite element techniques and a continuum mechanics failure criteria. The first objective was to accurately determine the stress field. The second objective was to employ a damage criteria based on the elemental stress field. The final objective was to evaluate the effectiveness of using an elemental stiffness reduction to study damage initiation and progression. The finite element code used was NOSAPM. Keywords: Composite materials, Shear test, Stiffness reduction, Damage initiation, Finite elements.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1988
Accession Number
ADA194880

Entities

People

  • Dean T. Dupont

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Air Force
  • Aircrafts
  • Composite Materials
  • Computers
  • Continuum Mechanics
  • Elastic Properties
  • Engineering
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Materials
  • Mechanics
  • Modulus Of Elasticity
  • Shear Stresses
  • Shear Tests
  • Stiffness
  • Three Dimensional

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.
  • Structural Health Monitoring of Composite Structures.