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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Vacuum forming of a sheet of thermoplastic material around a mandrel conforming to the shape of the finished object provides a pattern for an investment mold. The thickness of the metal part is determined by the thickness of the plastic pattern.
A diazo photographic process of clear plastic masters is used in reproducing front and back printed circuit layouts of differing intensity on a single sheet.
To test the crease resistance of sheet materials, the mid-section is folded over crease-control blades. One end is clamped to a motor-driven eccentric, the other to a spring, and durability is measured by the cycles required to produce failure.
Diffusion studies of commercially available coating on molybdenum alloy sheet at 2500 deg f
Bend transition temperature of arc-cast worked, recrystallized, and welded molybdenum and molybdenum-titanium alloy sheet
Fiberglass tooling dies accelerate forming of large metal sheets. The dies, fabricated to fit over and fasten to the die bases, are lightweight, quickly replaced and have nongalling surfaces.
Salt stress corrosion cracking of residually stressed titanium alloy brake formed sheet for supersonic transport
Oxidation resistant coatings for Cb-10Ti-52r columbium-alloy sheet
Mechanical properties of Inconel sheet superalloy at very high temperatures for supersonic transport
Thin double aluminum sheet spacecraft shielding for protection from meteoroid impact damage
Chemical milling process aids the production of 6.5 percent silicon-iron soft magnetic-alloy sheets to very thin gages. Following conventional rolling to safe gage limits, the material is chemically reduced to the desired gage.
Free floating support system in cryogenic pipe lines maintains the valve and valve operator in alignment. A Teflon sheet that is placed between the slide support plate and the base permits the valve and valve operator to move freely, as a unit, when the pipe line moves.
Cyclic plastic stresses in notched aluminum alloy sheets under constant-amplitude repeated tension and reversed loading - fatigue life data
High temperature oxidation tests on tantalum- tungsten alloy sheet for heat shield use
Oxidation resistant coatings on niobium-titanium- zirconium alloy sheet tested at high temperatures
Salt stress corrosion of residually stressed titanium-aluminum-molybdenum-vanadium alloy sheet after high temperature exposure
Mechanical properties of Hastelloy sheet alloy at cryogenic temperatures
Radiographic detection of cracks adjacent to spotwelds in thin stainless steel sheet