Accession Number : ADA301967

Title :   Fabrication of Uniaxial Filament-Reinforced Epoxy Tubes from Structural Applications,

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

Personal Author(s) : Davis, John G., Jr

PDF Url : ADA301967

Report Date : 07 NOV 1968

Pagination or Media Count : 22

Abstract : A process has been developed for fabricating uniaxial filament-reinforced epoxy tubes. The process utilizes hand layup techniques, a Teflon mandrel, and a heat-shrinkable Teflon sleeve. At the present, over 40 tubes of boron-epoxy and S-glass-epoxy have been fabricated using the process reported herein. The tubes are essentially void free, exhibit less dimensional variation than the tolerances set for commercially available extruded aluminum tubing, and display a smooth surface finish. Short sections of both types of tubing have been subjected to axial compression tests. The boron-epoxy and S-glass-epoxy tubes exhibited average strengths of 309 ksi (2.13 GN/sq m) and 207 ksi (1.43 GN/sq m), respectively.

Descriptors :   *FIBER REINFORCED COMPOSITES, *AEROSPACE CRAFT, *EPOXY COMPOSITES, *EPOXY RESINS, COMPRESSION, SPACECRAFT, STRESS ANALYSIS, FABRICATION, EXTRUSION, GLASS, DEFECTS(MATERIALS), ALUMINUM, FILAMENTS, TOLERANCES(MECHANICS), AXIAL LOADS, TUBES, TETRAFLUOROETHYLENE RESINS.

Subject Categories : Laminates and Composite Materials
      Plastics
      Research and Experimental Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE