Accession Number : ADA306147
Title : Preliminary Investigation of Filament-Wound Glass-Reinforced Plastics 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. ; Richards, Hadley T. ; Hickel, Robert O.
PDF Url : ADA306147
Report Date : MAR 1965
Pagination or Media Count : 30
Abstract : A preliminary investigation of the strength characteristics of filament-wound glass-reinforced plastic (FRF) materials was made at temperatures of 75 deg, -320 deg, and -423 deg F. The material was tested in the form of bidirectionally wound sheet material, unidirectionally wound Naval Ordinance Laboratory (NOL) type rings and bidirectionally wound cylinders. Also, a preliminary investigation of metallic and polymeric liners was made in FRP pressure vessels under cyclic strain of 2 1/2 percent at a temperature of -320 deg F. The ultimate strength of FRP materials at -320 deg and -423 deg F was significantly higher than that at room temperature. For example, strength increases ranging from 21 to 81 percent were noted for the cryogenic temperatures depending on the material and type of test specimen. The materials were found to be relatively insensitive to sharp notches. A preliminary investigation of liner materials and liner configurations indicated that aluminum foil liners having some type of provision for mechanical elastic extensibility show promise for use as permeability barriers in FRP pressure vessels subjected to cyclic pressurization resulting in strains of 2 1/2 percent. In general, plain metallic liners or plain polymeric liners were found to be unsatisfactory. (AN)
Descriptors : *STRESS STRAIN RELATIONS, *GLASS REINFORCED PLASTICS, LOW TEMPERATURE, TENSILE STRENGTH, FILAMENT WOUND CONSTRUCTION, PERMEABILITY, STRESS ANALYSIS, ALUMINUM ALLOYS, STRESS TESTING, TENSILE STRESS, ELASTIC PROPERTIES, MODULUS OF ELASTICITY, STAINLESS STEEL, GLASS, LININGS, TEMPERATURE GRADIENTS, CYLINDRICAL BODIES, PRESSURE VESSELS, PRESSURIZATION, LIQUID NITROGEN, EPOXY RESINS, CRYOGENICS, THERMAL CYCLING TESTS, THERMAL STRESSES, AXIAL LOADS, CYCLIC LOADS, NOTCH TOUGHNESS, ALUMINUM FOIL.
Subject Categories : Plastics
Properties of Metals and Alloys
Distribution Statement : APPROVED FOR PUBLIC RELEASE