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http://dx.doi.org/10.5050/KSNVE.2013.24.2.123

Development and Application of Phased Array System for Defect Imaging in Plate-like Structures  

Lee, Joo Kyung (School of Mechanical and Aerospace Engineering, Seoul National University)
Kwon, Young Eui (School of Mechanical and Aerospace Engineering, Seoul National University)
Lee, Heung Son (School of Mechanical and Aerospace Engineering, Seoul National University)
Seung, Hong Min (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Ki Yeon (School of Mechanical and Aerospace Engineering, Seoul National University)
Lee, Jun Kyu (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Hoe Woong (Korea Atomic Energy Research Institute)
Lee, Ho Cheol (School of Mechanical and Automotive Engineering, Catholic University of Daegu)
Kim, Yoon Young (School of Mechanical and Aerospace Engineering, Seoul National University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.2, 2014 , pp. 123-130 More about this Journal
Abstract
An ultrasonic magnetostrictive transducer-based phased-array system for imaging defects in plate structures is newly proposed. In that most ultrasonic phased array systems rely on piezoelectric transducers or electromagnetic acoustic transducers, this system has its own unique feature of employing magnetostrictive transducers. Interest in using a phased array system using magnetostrictive transducers has been recently reported for pipe inspection but no such system has been developed for plate inspection. In this investigation, we aim to propose a phased array system using OL-MPTs (Omnidirectional Lamb wave Magnetostrictive Patch Transducers) for plate inspection. The developed system consists of a multi-channel function generator, power amplifiers, preamplifiers and a data acquisition unit. In the process of its development, each of the units must be checked and in doing so, we suggest types of ultrasonic wave experiments that should be carried out. Finally, the phased system using a transducer array composed of eight OL-MPTs is newly configured and is applied for actual crack detection experiments.
Keywords
Magnetostrictive Transducer; Ultrasonic Guided Wave; Phased Array; Lamb Wave;
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Times Cited By KSCI : 2  (Citation Analysis)
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