Abstract
We produced a new metal core-containing piezoelectric fiber by means of the hydrothermal method. The insertion of a metal core was significant in view of its greater strength than ceramic materials and in that electrodes are nol required in the fiber's sensor and actuator applications. A new smart board was designed by mounting these piezoelectric fibers on the surface of a CFRP composite. It was shown that these complex fibers can function as sensors and actuators. In order to evaluate the sensor and actuator However, using the hydrothermal method, a piezoelectric layer of about 20μm thickness can be formed on the titanium wire surface, whereas the conventional PZT clad is too thin for use as an actuator. In this paper, we solve this problem using extrusion method, and develop a thicker PZT ceramics than that of a PZT-clad fiber. Thirty-one piezoelectric fibers were embedded in a CFRP composite material, and the sensor and the actuator function were evaluated. We showed that self-sensing was possible using this smart board.
