Coupled Damage and Moisture-Transport in Fiber-Reinforced Polymeric Composites.

Abstract

This paper presents a mathematical model for the coupling between moisture diffusion and damage in fiber-reinforced, polymeric composites. In these materials, moisture was observed to cause damage by a multitude of minute debondings at the fiber/matrix interfaces. The model employs concepts of continuum damage theory to describe those debondings. Formal evolutionary expressions are derived and related to the extent of damage, the stress field, moisture content and moisture gradient. The effects of damage on moisture diffusion and on reductions in moduli are aslo formulated. Qualitative comparisons with experimental results are provided. Keywords: Constitutive Equations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1986
Accession Number
ADA169379

Entities

People

  • Y. Weitsman

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Diffusion
  • Epoxy Composites
  • Fiber Reinforced Composites
  • Laminates
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanics
  • Micromechanics
  • Moisture Content
  • Physics
  • Stress Strain Relations
  • Stresses
  • Three Dimensional
  • Two Dimensional

Readers

  • Agricultural Chemistry/Soil Science
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Reinforced Composite Materials