Accession Number:

ADA128774

Title:

Thermal Conductivities and Diffusivities of Graphite-Epoxy Composites

Descriptive Note:

Final rept. 2 Jan-31 Dec 1982

Corporate Author:

OHIO STATE UNIV COLUMBUS DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1983-02-01

Pagination or Media Count:

87.0

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 k6.0 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 BTUhr-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 BTUcu ft 3-F, respectively.

Subject Categories:

  • Laminates and Composite Materials
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE