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http://dx.doi.org/10.7776/ASK.2013.32.6.502

Design and Fabrication of 2D Array Ultrasonic Transducers with a Conductive Backer  

Woo, Jeongdong (경북대학교 기계공학과)
Roh, Yongrae (경북대학교 기계공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.32, no.6, 2013 , pp. 502-508 More about this Journal
Abstract
In this paper, 2D array transducers using a conductive backer similar to 1-3 composites have been designed, fabricated, and evaluated. The conductive backer was based on well known manufacturing process of 1-3 composites with affordable ingredients. The 2D array transducer had 4,096 elements designed to have 3.5 MHz center frequency and a fractional bandwidth over 60 %. Fabricated prototype of the transducer satisfied the specifications in the center frequency and bandwidth. Performance over the entire elements was so uniform that the standard deviation was less than 0.81 dB. Thus applicability of the conductive backer proposed in this work to 2D array transducers was verified.
Keywords
Volumetric imaging; Ultrasonic array transducer; 1-3 composite; Conductive backer;
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