摘要
Thickness measurement plays an important role in the monitoring of pipeline corrosion damage. However, the requirement for prior knowledge of the shear wave velocity in the pipeline material for popular ultrasonic thickness measurement limits its widespread application. This paper proposes a method that utilizes cylindrical shear horizontal(SH) guided waves to estimate pipeline thickness without prior knowledge of shear wave velocity. The inversion formulas are derived from the dispersion of higher-order modes with the high-frequency approximation. The waveform of the example problems is simulated using the real-axis integral method. The data points on the dispersion curves are processed in the frequency domain using the wave-number method. These extracted data are then substituted into the derived formulas. The results verify that employing higher-order SH guided waves for the evaluation of thickness and shear wave velocity yields less than1% error. This method can be applied to both metallic and non-metallic pipelines, thus opening new possibilities for health monitoring of pipeline structures.
作者
代政辰
刘金霞
龙云飞
张建海
Tribikram Kundu
崔志文
Zhengchen Dai;Jinxia Liu;Yunfei Long;Jianhai Zhang;Tribikram Kundu;Zhiwen Cui(Department of Acoustics and Microwave Physics,College of Physics,Jilin University,Changchun 130012,China;School of Mechanical and Aerospace Engineering,Jilin University,Changchun 130025,China;Department of Civil and Architectural Engineering and Mechanics,University of Arizona,Tucson,Arizona 85721,USA;College of Aerospace and Mechanical Engineering,University of Arizona,Tucson,AZ 85721,USA;State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China)
基金
Project supported by the Natural Science Foundation of Jilin Province of China(Grant Nos.20240402081GH and 20220101012JC)
the National Natural Science Foundation of China(Grant No.42074139)
the State Key Laboratory of Acoustics,Chinese Academy of Sciences(Grant No.SKLA202308)。
