Cure cycle simulations of composites with temperature and cure dependent anisotropic viscoelastic properties

Sung Yi, Harry H. Hilton, M. Fouad Ahmad, Kendall H. Pierson

Research output: Contribution to conferencePaperpeer-review

Abstract

Complete 3 D anisotropic degree of cure and temperature dependent thermal properties and viscoelastic constitutive relations are formulated to describe composites during curing in autoclaves. Sensitivity studies were undertaken to determine the influences of time step and mesh size on the convergence of the finite element analysis of temperature and degree of cure. Expressions for the probability of tunes to delaminate during cure under combined stresses are derived and delamination onset survival times of laminated composites in the autoclave during manufacture are investigated in detail. Specific experimental areas are identified where needed deterministic and stochastic data for thermal, viscoelastic and failure properties during manufacturing cycles are unavailable.

Original languageEnglish (US)
Pages1-9
Number of pages9
DOIs
StatePublished - 1996
Event37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996 - Salt Lake City, United States
Duration: Apr 15 1996Apr 17 1996

Other

Other37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996
Country/TerritoryUnited States
CitySalt Lake City
Period4/15/964/17/96

Keywords

  • Composite manufacturing
  • Cure process
  • Delamination onset
  • Finite element analysis
  • Interlaminar stresses
  • Laminated omposites
  • Polymer matrix
  • Probability of failure
  • Residual stresses
  • Stochastic processes
  • Viscoelastic composites

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Architecture
  • Building and Construction

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