Thermal Conductivities and Diffusivities of Graphite-Epoxy Composites

Abstract

Transient heat conduction experiments were performed on graphite- epoxy composites with fibers oriented uni-directionally in the matrix. With the fiber axis arranged parallel or transverse to the 4 heat flow direction, effective thermal conductivities and diffusiveities in the three orthogonal directions were obtained. also determined in this work were the isotropic conductivity and diffusivity for the epoxy resin (Fibrite No. 934) as 0.136 BTU/ hr-F-ft. and 8.5. x 10 to the 7th power sec, respectively. A value of k=6.0 BTU/ hr-F-ft for carbon fobers (Hercules 3501-5A) in the axial direction was deduced. For the conductivity transverse to the fibers, a value of 2.4 BTU/hr-F-ft was obtained from the measured effective transverse conductivity values. The thermal capacities (pC) for the carbon fibers and resin used in this study were determined as 48.2 and 44.4 BTU/cu ft 3-F, respectively.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1983
Accession Number
ADA128774

Entities

People

  • Lit. S. Han
  • William F. Boyee

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Diameters
  • Engineering
  • Epoxy Composites
  • Equations
  • Fibers
  • Films
  • Graphite Epoxy Composites
  • Graphitic Materials
  • Materials Laboratories
  • Mathematical Analysis
  • Measurement
  • Physical Properties
  • Specific Heat
  • Steady State
  • Thermal Conductivity
  • Thermal Diffusivity

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Energy Conservation and Renewable Energy Engineering.
  • Reinforced Composite Materials