Stochastic delamination simulations of nonlinear viscoelastic composites during cure

Harry H. Hilton, Sung Yi

Research output: Contribution to journalArticlepeer-review

Abstract

Expressions for cure and residual stresses for nonlinear anisotropic viscoelastic composites are formulated. Probabilities of delamination during the manufacturing process are examined to determine survivability during manufacture. It is shown that the worst conditions occur during the cool down period after cure has been completed. Linear viscoelastic material maximum stresses exceed the corresponding nonlinear ones by as much as 35%. The corresponding largest probability of failure difference is only 1 1%. The effects of fiber orientation are demonstrated.

Original languageEnglish (US)
Pages (from-to)111-127
Number of pages17
JournalJournal of Sandwich Structures and Materials
Volume1
Issue number2
DOIs
StatePublished - 1999
Externally publishedYes

Keywords

  • Cure processes
  • Delamination
  • Nonlinear viscoelasticity
  • Probabilistic failure analysis
  • Viscoelastic composites

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering

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