Accession Number : AD0619872

Title :   ANALYTICAL STUDIES OF HOLLOW SPHERES FOR LOWER DENSITY HIGHER STRENGTH BUOYANCY MATERIALS.

Descriptive Note : Progress rept.,

Corporate Author : NAVAL APPLIED SCIENCE LAB BROOKLYN N Y

Personal Author(s) : Stechler,Bernard G. ; Resnick,Israel

Report Date : 16 AUG 1965

Pagination or Media Count : 18

Abstract : An investigation was made to develop a low density, high strength buoyancy system of materials with a target density of 0.3 to 0.4 cu gm/cu cm (19-25 lb/cu ft) which will be able to withstand 13,500 psi hydrostatic pressure. For a hollow sphere of a particular material at 13,500 psi external pressure the optimum sphere density is a constant for any desired outer diameter. The following candidate materials are potentially suitable and are listed in order of ascending optimum sphere densities at 13,500 psi external pressure: beryllia 7.8 lb/cu ft, silicon carbide 8.1 lb/cu ft, alumina 10.8 lb/cu ft, glass 14.8 lb/cu ft, aluminum 16.2 lb/cu ft, titanium 21.5 lb/cu ft, steel 27.8 lb/cu ft.

Descriptors :   (*BUOYANCY, MATERIALS), (*SPHERES, BUOYANCY), DENSITY, COMPRESSIVE PROPERTIES, BERYLLIUM COMPOUNDS, OXIDES, SILICON COMPOUNDS, CARBIDES, ALUMINUM COMPOUNDS, GLASS, ALUMINUM, TITANIUM, STEEL, WEIGHT, ELASTIC PROPERTIES, GRAPHICS, SUBMARINES

Distribution Statement : APPROVED FOR PUBLIC RELEASE