SEARCH · Search NASA
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Thermocouple wires, consisting of tungsten-rhenium alloy protected by ablative ceramic coating, are wound on a reel and fed continuously into bath. Tests indicate accuracy and reliability are comparable to conventional devices.
Standard ''weldmatic'' spotwelder and tweezer-type welding head burns and vaporizes sheath material to expose undamaged thermocouple wire. Firing is repeated to remove additional sheathing and after three or four firings electrodes require cleaning.
Thermal stability and electromotive drift of noble metal and refractory metal thermocouple wires
Gas cooled high temperature thermocouple
Control of fusion welding through use of thermocouple wire
Test facility development for noble metal thermocouple research program 1000 to 2000 C
Design and characteristics of thermocouples consisting of flexible tape for improved attachment to temperature source
Thermal and fast neutron irradiation effects on helium-argon environment irradiated and unirradiated tungsten rhenium thermocouples at 2000 K and drift measurements
Long-term drift of noble and refractory metal thermocouples at 1600 K in air, argon, and vacuum
Flow visualization, thermocouple measurements, and analyses of shock interference heating effects on straight wing space shuttle model
Experimental investigation on effect of spot welded or adhesively bonded thermocouples and fatigue behavior of two titanium alloys suitable for use in high speed airplanes
Temperature sensitive paint and thermocouple techniques comparison for boundary layer transition data, considering aerodynamic heating and transition Reynolds numbers
Thermal conductivity rapid measurement in 300-1200 K range using traversing thermocouple technique
Hybrid thermocouple with PbTe and SiGe thermoelectric materials, discussing development status and performance prediction
Neutron irradiated and unirradiated Ta sheathed BeO insulated grounded junction thermocouples drift measurement
Thermal emf changes for noble and refractory metal thermocouples, determining drift in high temperature air, Ar and vacuum environments for long time periods
Laboratory method assessing homogeneity and interchangeability of thermocouple wires, considering thermoelectric properties of widely separated wire from same spool
Thermode composed of two thin-walled stainless steel hypodermic needles and cooper-constantan thermocouple or small thermistor to indicate temperature at point of perfusion is used to measure brain temperature in animals. Because of relatively small size of thermode, structural damage to brain is minimized.