Thermo-Oxidative Behavior of High Temperature PMR-15 Resin and Composites (Postprint)

Abstract

The present study examines the thermo-oxidative behavior of high-temperature polymer matrix composite (HTPMC) materials. Thermo-oxidative aging in neat resin is simulated with a diffusion-reaction model in which temperature, oxygen concentration, and weight loss effects are considered. The thermo-oxidative behavior of the composite, on the other hand, is significantly different from that of the constituents as the composite microstructure, including the fiber/matrix interphase/interface, introduces anisotropy in the diffusion and oxidation behavior. Unit cell analyses are carried out using three-dimensional finite element analysis of repeated volume elements representing the fiber, matrix and interphase regions, and the resin oxidation model. Parametric studies illustrating the anisotropy in the oxidative region growth and the effect of fiber and interphase diffusivity on the oxidation layer growth are discussed. It is suggested that fiber-matrix debonding could provide additional diffusion paths to explain the extent of observed anisotropic oxidation growth.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2007
Accession Number
ADA469992

Entities

People

  • G. A. Schoeppner
  • G. P. Tandon
  • K. V. Pochiraju

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Body Weight
  • Carbon Fibers
  • Composite Materials
  • Diffusion
  • Diffusivity
  • Finite Element Analysis
  • Graphitic Materials
  • High Temperature
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Numerical Analysis
  • Polymer Matrix Composites
  • Three Dimensional

Fields of Study

  • Materials science

Readers

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