A Study on Techniques for Focusing Circumferential Array Guided Waves for Long Range Inspection of Pipes

被引：0
|
作者：
Kang, To [1 ]
Kim, Hak-Joon [1 ]
Song, Sung-Jin [1 ]
Cho, Young-Do [1 ]
Lee, Dong-Hoon [1 ]
Cho, Hyun-Joon [1 ]
机构：
[1] Sungkyunkwan Univ, Sch Mech Engn, Suwon 440746, South Korea
来源：
JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING | 2009年 / 29卷 / 02期
关键词：
Ultrasonic Array Guided Wave; Focusing Technique; Dispersion Curve; Pipes; S/N Ratio;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultrasonic guided waves have been widely utilized for long range inspection of structures. Especially, development of array guided waves techniques and its application for long range gas pipe lines (length of from hundreds meters to few km) were getting increased. In this study, focusing algorithm for array guided waves was developed in order to improve long range inspectability and accuracy of the array guided waves techniques for long range inspection of gas pipes, and performance of the developed techniques was verified by experiments using the developed array guided wave system. As a result, S/N ratio of array guided wave signals obtained with the focusing algorithm was increased higher than that of signals without focusing algorithm.
引用
收藏
页码：114 / 121
页数：8
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