Novel heat flux sensor for SiC-SiC ceramic matrix composite engine components

Authors

Kevin Rivera, University of Rhode Island
Otto J. Gregory, University of Rhode Island

Document Type

Article

Date of Original Version

10-1-2022

Abstract

Silicon carbide-silicon carbide ceramic matrix composites (SiC-SiC CMC's) are being used in gas turbine engine hot sections due to their refractory nature and excellent toughness at high temperatures. A novel heat flux sensor was developed for SiC-SiC CMC based engine components, which can survive temperatures up to 550 °C. The heat flux sensor consists of platinum thin films that forms a thermocouple junction with the SiC-SiC CMC which utilizes the bulk thermoelectric properties of the SiC-SiC CMC for its operation. This novel Pt:SiC-SiC CMC heat flux sensor generates a thermoelectric voltage that is directly proportional to the temperature gradient along the through thickness direction of the CMC component onto which it was deposited and has a calibration factor of 0.0266 µV/(W/m²). Fabrication details, experimental results and implementation challenges are discussed.

Publication Title, e.g., Journal

Sensors and Actuators A Physical

Volume

345

Citation/Publisher Attribution

Rivera, Kevin, and Otto J. Gregory. "Novel heat flux sensor for SiC-SiC ceramic matrix composite engine components." Sensors and Actuators A Physical 345, (2022). doi: 10.1016/j.sna.2022.113771.