Biaxial Failure Analysis of Graphite Reinforced Polyimide Composites

Abstract

Three issues have been addressed in this report. Firstly, the biaxial shear dominated failure properties of graphite/polymid fabric composites have been investigated at room temperature using the biaxial Iosipescu method. Secondly, a new testing procedure has been suggested for evaluating micro-damage in polymer matrix composites. Using this method, three-dimensional failure characteristics of damage generated in the graphite/polymid Iosipescu specimens can be determined for various loading conditions. Finally, non-linear finite element computations of internal stresses in the Iosipescu specimens have been performed taking into account the effect of specimen sliding within the Iosipescu fixture.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1996
Accession Number
ADA329883

Entities

People

  • Greg Odegard
  • Kevin H. Searles
  • Maciej S. Kumosa
  • V. Thirumalai

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Advanced Materials
  • Composite Materials
  • Failure Mode And Effect Analysis
  • Graphitic Materials
  • High Temperature
  • Materials
  • Materials Science
  • Materials Testing
  • Polymer Matrix Composites
  • Polymers
  • Shear Properties
  • Shear Strength
  • Shear Tests
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.