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Application of the PI/FCNT(EPD) pressure sensor in both high temperature and high pressure environment. a,b) PI/FCNT (EPD) pressure sensor, the whole structure is PEEK‐Cu electrode‐PI/FCNT(EPD) film‐Cu electrode‐PEEK. c,d) Experimental setup for the real‐time detection of prestresses within the composite sheath of motor rotor under high temperature (380 °C). e) Relative current change versus the pressure applied to the PI/FCNT(EPD) pressure sensor during the winding process.
