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We produced a new piezoelectric fiber with metal core by the hydrothermal method . The insertion of metal core was significant in view that the fragility of ceramics can be overcome and electrodes are not required in the use as sensors and actuators. And new smart board was designed by mounting these piezoelectric fibers on the surface of the CFRP composite. It was shown that these complex fibers function as sensor and actuator in the CFRP board. In order to evaluate the sensor and actuator. However, by the hydrothermal method, piezoelectric layer can be uniformly formed about 20μm thickness on the titanium wire surface, the PZT clad is insufficient in thickness for the actuator use. In this paper, we solve this problem using extrusion method. We developed the metal core further thicker PZT clad fiber by the extrusion method. The sensor signal and vibration displacement are bigger compared to that of the hydrothermal fiber.

Study on Metal Core-assisted Piezoelectric Complex Fiber (2nd Report, Production of the Piezoelectric Fiber Using the Extrusion Method)