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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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Holding solenoid uses residual magnetism to hold its armature in a desired position after excitation current is removed from the coil. Although no electrical power or mechanical devices are used, the solenoid has a low tolerance to armature displacement from the equilibrium position.
Ultrasonic method is used to measure residual stress in metal structures. By using this method, various forms of wave propagation in metals are possible, and more thorough analysis of complex geometric structures may be had.
Comparison of nephelometric instrumental technique and gravimetric method for analysis of nonvolatile residue level in hydrocarbon cleaning solvents
Nondestructive methods for determining residual stress and fatigue damage in metals
Crack propagation, delayed failure, and residual static strength of titanium, aluminum, and stainless steel alloys in air, three percent salt solution, and sea water
Physical characteristics of residual DNA in bacterial cells after degradation due to ionizing radiation
DNA-agar annealing of residual DNA after degradation by ionizing radiation
Cryogenic and cryosorption pumping of residual gases for clean test volume
Nondestructive direct measurement of residual surface stresses in metals can be made because metal under stress has a different electrochemical solution potential than in the unstressed condition. The method uses two matched electrolytic cells to cancel extraneous effects on the actual solution potential of the metal specimen.
Metabolism data from chemically defined low residue diet for small primates
Residual static strength and slow crack growth behavior of duplex annealed Ti-8Al-1Mo-1V sheet
Quenched residual rocket motor heat for vacuum propulsion
Subsurface residual stress on steel inner races from ball bearings during rolling contact
Residual stress and fatigue measurements in aluminum alloys by ultrasonic shear and surface wave analysis
Chemical residues on capsule mechanical training model subassemblies after bioassay
Light scattering nonvolatile residue spacecraft equipment cleanliness evaluation test methods
Automatic measurement of nonvolatile residue of cleaning solvents
Techniques for controlling warpage and residual stresses in welded aluminum alloy structures for Saturn project