Modeling of Failure Mechanisms in Composites With Z-Pins-Damage Validation of Z-Pin Reinforced Co-Cured Composite Laminates

Abstract

The Epoxy Lamina (EL) concept is introduced to explain overall stiffness reduction in Z-pin reinforced composite laminates, as reported by Zhang et al., for a typical 2%-vol fibre content. The concept is applied to a quasi-isotropic laminate, whereby both the softening and strengthening effects are separated out and quantified, based upon experimental data. This study is accompanied by a FEM-based micromechanical addressing of the composite. A set of fibre arrangements is considered so as to match reported laminate properties, looking for a consistent layout to include the Z-pins effect. These treatments fall within linear elastic behaviour, and are essential to a sound study of the upcoming inelastic regime.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2011
Accession Number
ADA567656

Entities

People

  • Guillermo Jaramillo
  • Jaime Aguilar
  • Mauricio Barrera

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Carbon Fibers
  • Composite Materials
  • Dynamic Tests
  • Elastic Properties
  • Engineering
  • Experimental Data
  • Failure Mode And Effect Analysis
  • Fibers
  • Laminates
  • Materials
  • Materials Science
  • Materials Testing
  • Mechanics
  • Modulus Of Elasticity
  • Poisson Ratio
  • Shear Modulus
  • Stiffness

Fields of Study

  • Materials science

Readers

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