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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.
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☌ high-pressure hot-gas turbine test. Integrated thin-film sensors to measure the vane’s surface temperature are necessary for more efficient and smarter aeroengines.