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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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Ultrasonic attenuation in pure Nb mixed state for magnetic field near second critical strength, noting field orientation and temperature effects
Telemetry of arterial flow in various conditions in man with Doppler ultrasonic flowmeter
Four handbooks have been prepared for use in teaching metal parts inspectors and quality assurance technicians the fundamentals of nondestructive testing using ultrasonic detection methods. The handbooks may be used in the shop or laboratory, or as study texts in technical schools and in the home.
Technique ultrasonically cleans small quantities of small mechanical parts in organic solvents without the need for vapor removal equipment. Parts are placed in a thin plastic bag with the solvent and then suspended in a cleaning tank containing the water-detergent solution.
Sheaths for pulse-echo ultrasonic temperature sensor
Ultrasonic delta technique for detecting defects in aluminum alloy weldments
Effect of ultrasonic vibration on precipitation hardening of steels and superalloys
Ultrasonic detection and measurement of fatigue cracks in notched cylinders subjected to reversed axial cyclic loading
Electronic attenuation of 10 to 130 MHz longitudinal ultrasonic waves in superconducting high purity Tl, noting energy gap anisotropy
Electronic attenuation of 10 to 130 MHz longitudinal ultrasonic waves in nonsuperconducting high purity Tl, noting anisotropy and measurements below 4.2 K
Ultrasonic thermometry for nuclear reactors based on temperature dependence of sound velocity in solids, discussing simulation experiments
Ultrasonics for automatic measurements of temperature and elastic moduli above 5000 F
Ultrasonic detection and measurement of fatigue cracks in notched cylinders subjected to reversed axial cyclic loading
Ultrasonic pulse velocity and attenuation measurement in presence of noise, using coherent detection and signal averaging
Ultrasonic pulse-echo-overlap method modified for simultaneous measurement of time delay and relative voltages in determining sound velocities and attenuation of solids
Delta technique for ultrasonic weld inspection, noting ability to detect randomly oriented weld defects
High temperature ultrasonic testing to measure and control solid materials early in processing
Ultrasonic paramagnetic resonance investigations of Pr ions ground state energy levels in calcium fluoride