Integrated thin-film sensors to measure the vane’s surface temperature are necessary for more efficient and smarter aeroengines. In this paper, a thin-film platinum/rhodioplatinum sensor array was built using microelectromechanical system technology on the surface of a nozzle guide vane, and a series of harsh tests was formulated and performed on these embedded sensors, such as 40 g vibrating and 100 g shocking tests, as well as an up to 1200°C high-pressure hot-gas turbine test. The sensor system (including the thin film and wire) is highly adherent and durable after the aforementioned tests, as well as the temperature cycling/shocking tests afterward, indicating that such thin-film sensors embedded on the vane surface are not only capable of detecting high temperatures but also able to stand for the tough working conditions in a propulsion environment of high vibration, violent shocking, and abrupt temperature stressing. These thin-film sensors are less than 1    μ m thick, and thereby more accurate as compared to a traditional wired thermocouple on the surface temperature measurements of turbine blades, serving the general engineering purpose for aeroengine research and development, as well as health monitoring.


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    Title :

    Robust Thin-Film Temperature Sensors Embedded on Nozzle Guide Vane Surface


    Contributors:

    Published in:

    AIAA Journal ; 58 , 4 ; 1441-1445


    Publication date :

    2020-02-11


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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