Integrated High Temperature Sensors for Advanced Propulsion Materials

摘要

Acree Technologies, Inc. (Acree) is developing advanced high temperature sensor technologies operational at temperatures up to 2400 °F and higher for advanced propulsion materials such as ceramic matrix composites (CMCs). At present there is no reliable direct or in-situ technique for measuring temperature or strain in the hot sections of turbine engines. Acree's approach is to use a resistance temperature detector (RTD) as well as an innovative passive wireless temperature sensor that have been developed at Acree and successfully tested at Pratt & Whitney's burner rig facility. A combination of an Energetic Deposition Process (EDP) and laser patterning are used to fabricate the sensors directly on gas turbine engine component. The sensors are fabricated using proven high-temperature materials with matching coefficient of thermal expansion (CTE) to that of the CMC and the environmental barrier coating (EBC).