Accession Number : ADA304484

Title :   Exploratory Investigation of Two Resin-Matrix Composites Subjected to Arc-Tunnel Heating,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Pittman, Claud M. ; Brown, Ronald D.

PDF Url : ADA304484

Report Date : MAY 1979

Pagination or Media Count : 31

Abstract : Flexure and short-beam shear specimens of a graphite-epoxy and a graphite-polyimide composite material were tested in an arc tunnel environment. The materials were subjected to seven heating rates from 12.5 to 308 kW/m2 for test times from 5 to 1000 seconds. The temperature response of the specimens was measured and the strength degradation caused by the various heating environments was determined.

Descriptors :   *STRENGTH(MECHANICS), *GRAPHITE EPOXY COMPOSITES, *POLYIMIDE RESINS, SHEAR PROPERTIES, TEMPERATURE, DEGRADATION, BEAMS(STRUCTURAL), MATRIX MATERIALS, WIND TUNNEL TESTS, AERODYNAMIC HEATING, FLEXURAL PROPERTIES, ELECTRIC ARCS.

Subject Categories : Laminates and Composite Materials
      Thermodynamics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE