声学
超声波传感器
电磁声换能器
传感器
材料科学
压力(语言学)
信号(编程语言)
磁致伸缩
激发
结构工程
超声波检测
工程类
物理
计算机科学
电气工程
磁场
哲学
量子力学
程序设计语言
语言学
作者
Sen Deng,S.Q. Wang,Bo Zhao,Y. Liu,Jiubin Tan
出处
期刊:Measurement
[Elsevier]
日期:2023-10-01
卷期号:220: 113332-113332
标识
DOI:10.1016/j.measurement.2023.113332
摘要
This article presents an equivalent sound propagation model for hollow cylindrical structures subjected to axial stress, which yields theoretical solutions for sound velocity changes in steel pipes under varying stress levels. To enable the excitation and detection of T (0,1) mode guided waves in hollow steel pipes, an electromagnetic ultrasonic transducer (EMAT) array based on the principle of magnetostriction is designed and tested. To accurately extract nanosecond-level sound time changes due to stress, this study devises the LMS-Gabor algorithm, which exploits the non-dispersive properties of T (0,1) mode guided waves to process the echo signal. Experimental results demonstrate that this stress measurement approach can achieve high accuracy, even in the presence of noise and signals in the same frequency band.
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