Multiple reflective signal reception in gas flow measurement using air-coupled leaky Lamb waves

Fan, Zhiping; Qie, Tianhao; Zhou, Yang

doi:10.1016/j.measurement.2019.04.011

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…At present, many researchers [40][41][42] use sinusoidal pulse signals as excitation signals. A periodic pulse excitation signal is applied to the signal-transmitting terminal in this study to facilitate data analysis and result processing.…”

Section: Numerical Modelingmentioning

confidence: 99%

“…In addition, to express the simulation result more clearly, different physical quantities (solid displacement, acoustic pressure field, and arrow, which represents acceleration) were selected from the perspective of multiple physical fields. 41 Additionally, the selected physical quantity reflects the continuous boundary conditions of acceleration and stress used in modeling. 46 The arrow represents acceleration, and the magnitude of acceleration directly reflects the magnitude of the interaction between the steel wires.…”

Section: Visualization Of Ae Wave Propagation Pathmentioning

confidence: 99%

“…The second color scale represents the air between the wires and the acoustic pressure field outside the parallel wire bundles. In addition, to express the simulation result more clearly, different physical quantities (solid displacement, acoustic pressure field, and arrow, which represents acceleration) were selected from the perspective of multiple physical fields 41 . Additionally, the selected physical quantity reflects the continuous boundary conditions of acceleration and stress used in modeling 46 .…”

Section: Ae Wave Propagation Simulationmentioning

confidence: 99%

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Investigation of wave propagation path and damage source 3D localization in parallel steel wire bundle

Liu

2022

Structural Contr & Hlth

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As one of the most important load-bearing components of cable-stayed bridges, the integrity of cables is essential to bridge condition assessment. However, the traditional one-dimensional damage location method has difficulty determining the spatial location of the damage source on parallel steel wire cables.Acoustic emission (AE) technology is a common means of structural health monitoring, and one of its most beneficial attributes is the ability to localize the damage. For this reason, a three-dimensional (3D) location algorithm based on the AE signal propagation path is proposed for cable damage localization. First, the propagation path of simulated AE signals in a parallel steel wire bundle (PSWB) was visualized using COMSOL Multiphysics software platform. Then, a 3D localization algorithm suitable for PSWB damage is proposed based on the propagation path and dispersion characteristics of AE waves. After that, experimental verifications were performed, and it was found that the damage locations can be determined accurately using the proposed algorithm. This algorithm helps to localize the damage source with only a few sensors and is crucial for cable protection and replacement.

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Section: Numerical Modelingmentioning

confidence: 99%

Section: Visualization Of Ae Wave Propagation Pathmentioning

confidence: 99%