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http://dx.doi.org/10.7776/ASK.2009.28.5.416

Feasibility Study on Detection of Defective Elements in a Linear Phased Array Transducer through Ultrasonic Field Analysis and Visualization  

Choi, Kwang-Yoon (부경대학교 대학원 음향진동공학과)
Yang, Jeong-Won (부경대학교 대학원 음향진동공학과)
Ha, Kang-Lyeol (부경대학교 물리학과)
Kim, Moo-Joon (부경대학교 물리학과)
Kim, Jung-Soon (동명대학교 멀티미디어공학과)
Lee, Chae-Bong (동서대학교 전자공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.5, 2009 , pp. 416-423 More about this Journal
Abstract
The ultrasonic pressure fields for the 3 MHz linear phased array transducer with sixteen piezoelectric elements of which one may not be operated by defect were simulated theoretically and measured experimentally using a visualization system of the Schlieren method. The simulation results for steering angles of $0^{\circ}$ and $30^{\circ}$ show that the side-lobe patterns of the transducer including a defective element is quite different from the transducer with all normal elements, and those patterns are in good agreement with the results of visualization. It is shown that the defective elements in a linear array transducer can be detected by comparison of the simulated and the visualized side-lobe patterns in two dimensional acoustic fields.
Keywords
Acoustic field visualization; Schlieren method; Linear phased array; Ultrasonic transducer; Side-lobe pattern;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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