Open AccessExtreme Environment Silicon Carbide Hybrid Temperature & Pressure Optical Sensors
Author(s) -
Nabeel A. Riza
Publication year - 2010
Language(s) - English
Resource type - Reports
DOI - 10.2172/1013345
Subject(s) - silicon carbide , robustness (evolution) , refractive index , materials science , temperature measurement , combustion , laser , redundancy (engineering) , computer science , acoustics , electronic engineering , optoelectronics , optics , engineering , composite material , physics , biochemistry , chemistry , organic chemistry , quantum mechanics , gene , operating system
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