Pulse-echo Response of Ultrasonic Transducer Fabricated by PZT-Polymer 3-3 Type Composite Resonator for Distance Measurement Applications

거리측정용 PZT-고분자 3-3형 복합압전체 트랜스듀서의 펄스에코 응답특성

PZT powders were prepared by the molten salt synthesis method. The porous PZT specimens were prepared from a mixture of PZT and Polyvinylalcohol(PVA) powders by BURPS(Burnout Plastic Sphere) technique. The pulse-echo response of PZT-polymer 3-3 type composite transducer with various PVA wt.% were studied, The fall time of pulse-echo response of PZT-polymer 3-3 type composite transducer was shorten to that of solid PZT-maded transducer. Therefore, a good transmitting and receiving properties could be obtained. The distance between transducer and reflector was in good agreement both solid PZT and PZT-polymer 3-3 type composite fabricated transducer.