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http://dx.doi.org/10.6109/jkiice.2013.17.7.1645

Piezoelectric Transducer for Ultrasonic Flaw Detector with High Performance  

Jung, Jun Hwan (Department of Semiconductor Engineering, Gyeongsang National University)
Jun, Ho Ik (Mattron Corp.)
Kim, Hyun-Sik (Mattron Corp.)
Kang, Seog Geun (Department of Semiconductor Engineering, Gyeongsang National University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.17, no.7, 2013 , pp. 1645-1652 More about this Journal
Abstract
In this paper, a new piezoelectric transducer for high performance ultrasonic flaw detector used in non-destructive test (NDT) is implemented. Here, the goals for some major characteristics such as piezoelectric strain constant and electro-mechanical coupling factor are fixed in advanced. Then, the parameters obtained by finite element analysis (FEA) are exploited to design and implement the piezoelectric transducer. As a result of experiments using manufactured samples, it is proved that the new PZT ceramics satisfy the goals very well. It has much improved impedance characteristic at the resonant frequency and generation of ultrasonic signals. In addition, ultrasonic flaw detector with the new transducer provides increased flaw detecting gain than the conventional one. Thus, it is considered that the new flaw detector contributes significantly to improve reliability of the NDT.
Keywords
Piezoelectric transducer; Piezoelectric sensor; Ultrasonic flaw detector; Non-destructive test (NDT);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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