A study of the effect of waterborne pressure on ultrasonic guided wave signals in pipelines

被引：0
|
作者：
Hu X. [1 ]
Lin T. [1 ]
Zhang W. [1 ]
Wei Z. [2 ]
Wang Y. [1 ]
机构：
[1] Xiamen University, School of Aeronautics and Astronautics, Xiamen
[2] Institute of Automation, Chinese Academy of Sciences, Beijing
来源：
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2024年 / 45卷 / 03期
关键词：
pipe; semi-analytical finite element; ultrasonic guided wave; water load pressure;
D O I：
10.19650/j.cnki.cjsi.J2312147
中图分类号：
学科分类号：
摘要：
In order to study the effect of water-loaded pressure on the ultrasonic guided wave signals, the dispersion curve and wave structure of guided wave in the pipe are analyzed by using the semi-analytical finite element (SAFE) method. The L(0,2) mode guided wave is selected in the detection experiment. A waterproof clamp that can withstand a pressure of 30 MPa is designed to encapsulate the piezoelectric transducer on the pipe. The encapsulated pipe is placed into a pressure chamber for the pressure cycle test, where the pressure varies between 0 MPa and 30 MPa. The guided wave signals of the heathy pipe and the damaged pipe with 5% area loss are collected during the pressure cycle experiments in order to analyze the effect of the water-loaded pressure on the guided wave signals. The experimental results show that the waterproof clamp has good waterproof and pressure-resistant properties, and at the same time, the water-loaded pressure does not have a significant effect on the amplitude of the L(0,2) modal waveguide signal. © 2024 Science Press. All rights reserved.
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页码：206 / 213
页数：7
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