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Fabrication and frequency response of a complex ultrasonic transducer for multilayer evaluation

Lee, Man-Jong and Kim, Joo Sun and Kim, Soo Ho and Ji, Seung Hyun and Yoon, Young Soo and Lee, Sang-Jin (2006) Fabrication and frequency response of a complex ultrasonic transducer for multilayer evaluation. Sensors and Actuators A: Physical, 125 (2). 223 - 233.

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Official URL: http://www.sciencedirect.com/science/article/B6THG...

Abstract

To characterize the thickness of a corrosive fluid system's coated facilities, such as pipes, tubes, tanks, and structural members, a complex ultrasonic transducer capable of measuring multilayered parts was fabricated and the time and frequency responses were evaluated. The target transducer was constructed with two active dual elements made from tape-cast PbNb2O6 sheets and an additional thin-film active element made from sol–gel spin-coated Pb(Zr0.52Ti0.48)O3 films. After adjusting the properties of each active element, a complex transducer was assembled after matching the impedance of each element and considering the minimal interference between the active layers. The impulse response of the assembled complex transducer shows excellent characteristics. Moreover, the assembled transducer's capability of accurately measuring the thickness assures that it can be directly applied to related industries.

Item Type:Article
Uncontrolled Keywords:Ultrasonic transducer; PZT-5A thick film; PbNb2O6 sheet; Tape casting; Sol–gel; electrical matching; Impulse response
Subjects:Analytical Science > Nanotechnology for sensing and actuating
ID Code:4661
Deposited By:SPI
Deposited On:08 Apr 2009 17:25
Last Modified:08 Apr 2009 17:25

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