Modeling of oxidative development in PMR-15 resin

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

Research output: Contribution to journalArticlepeer-review

102 Scopus citations

Abstract

A multidisciplinary approach focused on models and processes to predict the performance and life expectancy of high-temperature polymer matrix composite (HTPMC) materials used in a variety of aerospace applications is being developed. Emphasis is on the implementation and extension of hierarchical models to represent the polymer behavior/properties as a function of the degradation state. Neat resin specimens of high-temperature polyimide PMR-15 have been evaluated for various aging conditions. Characterization of the properties of the polyimide is focused on development of a constitutive law for use in a micromechanical analysis to predict the behavior of PMR-15 reinforced composites. Thermo-oxidative aging is simulated with a diffusion-reaction model in which temperature, oxygen concentration and weight loss effects are considered. One-dimensional simulations illustrate oxidative layer growth for neat resin specimens. Comparisons and correlations with experimental observations of oxidation layer growth are presented.

Original languageEnglish
Pages (from-to)1861-1869
Number of pages9
JournalPolymer Degradation and Stability
Volume91
Issue number8
DOIs
StatePublished - Aug 2006

Keywords

  • Aging
  • Degradation
  • Durability
  • Thermal oxidation

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