Motion of Continuous Fibers through a Newtonian Resin for High Fiber Volume Fraction

Abstract

This paper presents autoclave temperature histories to cure thick- section composite cylinders with graphite fibers and thermoset resins. The two cylinders considered have wall thicknesses of 0.15 m and 0.3 m. The first objective is to achieve a consolidation period when the resin viscosity is everywhere relatively low for a reasonably long period of time. For the 0.15 m thickness cylinder, the viscosity drops below 15 Pa's for 4.1 hrs.; for the 0.3 m thickness cylinder, the viscosity drops below 30 Pa's for 3.4 hrs. The second objective is to complete curing with the constraint that the temperature never exceeds 180 C at any point in the composite. This objective is achieved by limiting the autoclave temperature after the consolidation period. The peak interior temperature is very sensitive to small changes in the autoclave temperature during the final stages of curing.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1989
Accession Number
ADA234104

Entities

People

  • J. S. Walker
  • L. N. Hjellming

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Arrhenius Equation
  • Composite Materials
  • Conduction (Heat Transfer)
  • Conductivity
  • Engineering
  • Equations
  • Graphitic Materials
  • Heat Of Reaction
  • Materials
  • Measurement
  • Mechanical Engineering
  • Resins
  • Surface Temperature
  • Thermal Conductivity
  • Thermal Diffusivity
  • Thermosetting Plastics
  • Thick Walls

Readers

  • Fluid Dynamics.
  • Surface Coatings Technology.
  • Thermal Physics or Thermal Science.