Accession Number : ADA307652

Title :   Glass-, Boron-, and Graphite-Filament-Wound Resin Composites and Liners for Cryogenic Pressure Vessels.

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Hanson, Morgan P.

PDF Url : ADA307652

Report Date : FEB 1968

Pagination or Media Count : 18

Abstract : An experimental investigation was conducted to determine the tensile strength properties of glass, boron, and graphite composites at 75, -320, and -423 degrees F (297, 77, and 20 K). Composite tensile strength and interlaminar shear strength tests were made of Naval Ordnance Laboratory (NOL) rings. Tensile strengths of boron filaments were determined at 75 and -320 F (297 and 77 K). Strengths of glass composites were about 29 percent higher at cryogenic temperatures than at ambient temperature. Boron and graphite composite strengths were essentially the same in the temperature range investigated. Interlaminar shear strength in glass composites also increased from 75 to -320 F (297 to 77 K); boron and graphite showed no significant change within the temperature range. Filament translation efficiencies ranged from 58 to 69 percent for the materials investigated. Aluminum foil liners that were adhesively bonded to the internal surface of glass filament wound cylinders withstood pressure cycling to 2.5 percent strain for a cyclic life ranging from 14 to 165 cycles at cryogenic temperatures. Liner failures were associated with buckling of the seam areas.

Descriptors :   *FILAMENT WOUND CONSTRUCTION, *PRESSURE VESSELS, TENSILE STRENGTH, COMPOSITE MATERIALS, TENSILE PROPERTIES, GRAPHITE, LININGS, STRENGTH(GENERAL), RINGS, BORON, LAMINAR FLOW, CRYOGENICS, SHEAR STRENGTH, ALUMINUM FOIL, SHEAR TESTS.

Subject Categories : Laminates and Composite Materials
      Containers and Packaging

Distribution Statement : APPROVED FOR PUBLIC RELEASE