Extreme Environment Silicon Carbide Hybrid Temperature & Pressure Optical Sensors

Nabeel Riza

关键词: SENSORS;    PERFORMANCE TESTING;    SILICON CARBIDES;    GAS TURBINES;    THERMODYNAMIC PROPERTIES;    TEMPERATURE MEASUREMENT;    PRESSURE MEASUREMENT;   

DOI  :  10.2172/1013345
RP-ID  :  None
PID  :  OSTI ID: 1013345
Others  :  TRN: US201110%%548

美国|英语

来源: SciTech Connect

【 摘 要 】

This final report contains the main results from a 3-year program to further investigate the merits of SiC-based hybrid sensor designs for extreme environment measurements in gas turbines. The study is divided in three parts. Part 1 studies the material properties of SiC such as temporal response, refractive index change with temperature, and material thermal response reversibility. Sensor data from a combustion rig-test using this SiC sensor technology is analyzed and a robust distributed sensor network design is proposed. Part 2 of the study focuses on introducing redundancy in the sensor signal processing to provide improved temperature measurement robustness. In this regard, two distinct measurement methods emerge. A first method uses laser wavelength sensitivity of the SiC refractive index behavior and a second method that engages the Black-Body (BB) radiation of the SiC package. Part 3 of the program investigates a new way to measure pressure via a distance measurement technique that applies to hot objects including corrosive fluids.