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http://dx.doi.org/10.7776/ASK.2013.32.3.199

Design and Fabrication of a 1.75D Ultrasonic Transducer  

Lee, Wonseok (School of Mechanical Engineering, Kyungpook National University)
Roh, Yongrae (School of Mechanical Engineering, Kyungpook National University)
Publication Information
The Journal of the Acoustical Society of Korea / v.32, no.3, 2013 , pp. 199-207 More about this Journal
Abstract
In this paper, a $64{\times}8$ channel 1.75D ultrasonic transducer made of piezoelectric single crystals was designed, fabricated, and evaluated. First, a structure of the transducer was selected to be suitable for wiring on a planar array, and components were fabricated to correspond to the structure. Detailed structure of the transducer was designed through finite element analyses. As main performance factors, the crosstalk between neighboring elements was reduced through the control of kerf width and material, and desired frequency bandwidth of the transducer was achieved by designing the optimal thicknesses of the piezoelectric single crystal and matching layers. An experimental prototype of the transducer was fabricated following the design, and its performance was measured. Then the experimental results were compared with those of the finite element analysis, which led to the evaluation of the transducer developed in this work.
Keywords
Ultrasonic transducer; Multi-dimensional array transducer; Piezoelectric single crystal;
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