Defect Imaging Using Time Reversal Guided Waves in Pipes

Fei Deng

doi:10.4028/www.scientific.net/AMM.188.283

Paper Titles

The Analysis and Discussion of Sediment Transport Capacity Formula
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Research on the Inversion of Equivalent Surface Heat Transfer Coefficient of Mass Concrete by Calculating its Heat Flux
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Finite Element Stress Analysis with Consideration of Equivalent Stress in ANSYS – Case Study of Namchien Dam under Static and Dynamic Conditions
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Numerical Simulation of the Effect of Section Size on Averaging Pitot Tube
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Defect Imaging Using Time Reversal Guided Waves in Pipes
p.283

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 188Defect Imaging Using Time Reversal Guided Waves in...

Defect Imaging Using Time Reversal Guided Waves in Pipes

Abstract:

In order to realize defect imaging for guided waves inspection in a pipe, a time reversal method based on baseline subtraction method was introduced. In this method, baseline signals were prepared by detection on undamaged pipe. After that residual signals were obtained by executing subtraction between inspection signals and baseline signals. At last, without using the rectangular window for signal interception, time reversals signals are produced by time reversing the whole residual signals. Experiment and numerical simulation results show that this method simplifies the existing time reversal defect imaging method for guided wave inspection in pipes. Especially, a relatively whole defect’s passive wave field captured by this method will help us to achieve better imaging effect.

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Periodical:

Applied Mechanics and Materials (Volume 188)

Pages:

283-286

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.188.283

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Online since:

June 2012

Authors:

Fei Deng

Keywords:

Guided Wave, Imaging, Pipe, Time Reversal

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