Experimental study of viscoelastic effects and aging on elevated temperature damage and failure in polymer composites

N. V. Akshantala, L. C. Brinson*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

An experimental investigation of microcracking and physical aging effects in polymer matrix composites is described. The goal of the study was to assess the impact of aging on damage accumulation, in terms of microcracking, and the impact of damage on aging and viscoelastic behavior. Results indicate that while the aging times studied have only a limited influence on damage evolution, elevated temperature and viscoelastic effects have a profound effect on the damage mode seen for certain laminates. Some results are counterintuitive, including the lower strain to failure and the catastrophic failure mode observed at elevated temperatures. Fracture toughness for transverse cracks is seen to increase with temperature, however no significant effect of damage on the aging or viscoelastic properties of the laminates was observed.

Original languageEnglish (US)
Pages (from-to)1-19
Number of pages19
JournalMechanics Time-Dependent Materials
Volume7
Issue number1
DOIs
StatePublished - 2003

Keywords

  • Composite
  • Damage
  • Matrix cracking
  • Physical aging
  • Viscoelasticity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanical Engineering

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