Study on propagation characteristics of ultrasonic guided waves along the pipe

被引：0
|
作者：
Sun, Liying [1 ]
Li, Yibo [1 ]
Jin, Shijiu [1 ]
Song, Zhidong [1 ]
Zhang, Yuankai [1 ]
机构：
[1] Tianjin Univ, State Key Lab Precise Measuring & Testing Tech &, Tianjin 300072, Peoples R China
来源：
WCICA 2006: SIXTH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION, VOLS 1-12, CONFERENCE PROCEEDINGS | 2006年
关键词：
longitudinal guided waves; pipe inspection; girth weld; elbow; defect detection;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Ultrasonic guided wave is introduced as a promising pipe inspection tool for its long inspection distance and 100% pipe wall examination. The inspection range could reach 180m at single direction from one transducer when the pipe is in ideal condition. During the process of long-range pipe inspection, guided waves may go through many girth welds and elbows. When geometry characteristics of the pipe were changed, much energy of ultrasonic guided waves would be reflected and the inspection range may decrease due to energy attenuation of guided waves. Longitudinal wave was used to study propagation characteristics of ultrasonic guided waves along an experimental steel pipe. Research was carried out on energy attenuation of guided waves when it went through seven girth welds and a piece of elbow. And its ability of sensitivity and location precision of defects, such as notch, burr and branch was investigated.
引用
收藏
页码：5177 / +
页数：2
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