Study of Failure in Fibrous Composites Subjected to Bending Loads

Abstract

This study investigates the failure modes, failure strengths and failure criteria of laminated composite plates with stress concentration and subjected to bending loading. Graphite/epoxy composites are used for the present study. Lamina material properties, such as stiffness and strength, of the composite are obtained by experiments. A series of bending tests are conducted for laminated, graphite/epoxy composite plate with and without a hole to investigate their failure modes and strengths. In addition, finite element analysis are performed to compute stress distributions around holes of the composite plates subjected to bending loading. Based on the stress computation, a couple of failure criteria are examined to predict the failure strengths of composite plates with stress concentration. Finite element method, Delaminated composite beam, Contact-impact condition.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1994
Accession Number
ADA283330

Entities

People

  • Shih-ting Yang

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Engineering
  • Epoxy Composites
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Graphitic Materials
  • Laminates
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Numerical Analysis
  • Stiffness
  • Stress Concentration
  • Stresses
  • Tensile Strength
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Engineering
  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.