Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 150 for “"Temperature Measurement"”.
-
Optical pyrometry for noncontact temperature measurement
… rod and IR lenses to optically measure the temperature of a molten particle as it falls in an evacuated drop tube, has been designed and tested in the laboratory and in the field. The design uses a calcium fluoride (CaF₂) rod which transports optical energy radiated from the molten particle …
-
Temperature measurement using rare earth doped fibre fluorescence
… show significant advantages over conventional measurement techniques. This thesis investigates a relatively new method of measuring temperature using optical fibres, known as the fluorescence intensity ratio technique. The fluorescence intensity ratio technique uses the thermal coupling of two …
-
Sapphire Fiber Optic Sensor for High Temperature Measurement
… for ultra-low-cost sapphire fiber-optic high-temperature sensors. The research is divided into three major parts, the souceless sensor, the simple Fabry-Perot (F-P) interrogator, and the sensor system. Chapter 1 briefly reviews the background of thermal radiation, fiber optic F-P sensors, and …
-
Temperature measurement and transition detection using temperature-sensitive paint
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1996.
-
Application of Optical Fiber Sensors for Quenching Temperature Measurement
… coolant systems are not enough to handle the temperature increase in the cladding, and the likelihood of meltdown greatly increases. While the nucleate boiling and film boiling regimes have been well-investigated, the transition boiling regime between the point of departure from nucleate …
-
Novel Optical Sensors for High Temperature Measurement in Harsh Environments
Accurate measurement of temperature is essential for the safe and efficient operation and control of a vast range of industrial processes. Many of these processes involve harsh environments, such as high temperature, high pressure, chemical corrosion, toxicity, strong electromagnetic interference, …
-
Temperature measurement and thermal control of die casting processes using CCD cameras
A non-contact temperature measurement system for the die casting process is developed, using low-cost, charge-coupled device (CCD) cameras. Factors present in an industrial setting that affect non-contact temperature measurement are identified, and a system is developed to overcome these factors. A …
-
A dual-junction thermocouple probe for compensated temperature measurement in reacting flows
… of acquiring spatially and temporally resolved temperature data in turbulent reacting flows. Such a system would allow for increased understanding of turbulent reacting flows without the need for a costly and complex optical system. The system under study uses the responses of two thermocouples …
-
Non-contact Temperature Measurement of Stainless Steel in a TIG Welding Process
… performing a TIG welding process and acquiring temperature measurements near the weld with the use of an infrared spot sensor. The data collected can then be used to validate a computer simulation that models the exact same process. An experimental setup was built, and preliminary temperature …
-
An experimental investigation of temperature measurement by the Sodium D-Line Reversal Method
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1950.
-
STRAIN AND TEMPERATURE MEASUREMENT FROM DISTRIBUTED FIBER OPTIC SENSORS IN PERFORMANCE-BASED FIRE ENGINEERING
<p>"Strain and temperature measurement of steel and concrete structures under fires is critical to the understanding of structural performance yet historically challenging due to a significant gap in measurement science. This Ph.D. study characterizes in six parts low-cost distributed fiber optic …
-
Temperature reconstruction and acoustic time of flight determination for boiler furnace exit temperature measurement
The furnace exit gas temperature (FEGT) is one of the fundamental parameters necessary to determine the energy balance of the boiler in a coal-fired power plant, and is thus beneficial to the production of reliable thermo-fluid models of its operation and the operation of the systems down and …
-
Application of liquid crystals to surface temperature measurement on plates heated by cyclic bending
Temperature is a parameter which is important because of its influence on other material properties. Many temperature measurement techniques are available but few of them permit a direct visualization of surface temperature Variation. The Liquid crystal method is one of the rare methods that …
-
Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos)
… of the present study were to: 1) compare body temperature of anesthetized brown bears obtained by Vital Sense® capsules (VS) inserted gastrically to those obtained by deep rectal VS and handheld digital thermometer (HDT) and 2) to evaluate the decrease in core body temperature produced by an …
-
Dynamic surface temperature measurement on the first stage turbine blades in a turbofan jet engine test rig
Turbine blade surface temperatures were studied during transient operation in a turbofan engine test rig. A single fiber radiation pyrometer was used to view the suction side of the blades from approximately 60 percent axial chord to the trailing edge at an average radial location of 70 percent …
-
Cross sensitivity analysis of optical fibre-based sensing for high pressure, high temperature measurement in oil and gas applications.
Measurements of physical parameters like pressure, temperature, flow rate, vibrations and displacement in harsh environment are often desired in the oil and gas industry. Pressure and temperature are the most important parameters among them. Changes in pressure and temperature have a major role in …
-
Design of on-chip monitoring circuits for clock delay and temperature
… devices continue to scale, Process, Voltage and Temperature (PVT) variations tend to have a bigger impact on circuit performance. The ability to measure this impact provides essential knowledge about the circuit's current performance and opens the door to compensation techniques. Off-chip …
Page 1 of 8