2019
DOI: 10.1088/1361-665x/ab1fc8
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An enhanced Lamb wave virtual time reversal technique for damage detection with transducer transfer function compensation

Abstract: The Lamb wave time reversal method has widely been investigated as a baseline-free damage detection technique for structural health monitoring. Due to the mode tuning effects from the transducer-wave interactions, even for a pristine wave path, the reconstructed signal waveform may differ much from the original excitation waveform. Consequently, it becomes difficult to distinguish the differences between undamaged and damaged wave paths. This article presents an enhanced Lamb wave virtual time reversal (VTR) a… Show more

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Cited by 47 publications
(24 citation statements)
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“…One of the most effective absorbing boundaries technique in Finite Element Model (FEM) is based on the Stiffness Reduction Method (SRM) (Pettit et al, 2014). Recently, Wang and Shen (2019) applied the FCTF technique with an experimental verification in order to reconstruct HW, thanks to a transducer transfer function through a virtual TR approach making use of absorbing boundaries.…”
Section: Introductionmentioning
confidence: 99%
“…One of the most effective absorbing boundaries technique in Finite Element Model (FEM) is based on the Stiffness Reduction Method (SRM) (Pettit et al, 2014). Recently, Wang and Shen (2019) applied the FCTF technique with an experimental verification in order to reconstruct HW, thanks to a transducer transfer function through a virtual TR approach making use of absorbing boundaries.…”
Section: Introductionmentioning
confidence: 99%
“…The TR method has been used for the impact location determination in [8,9] and for both impact location and force identification in [10,11]. Lamb waves in connection with TR have been used in several works for the detection of micro-cracks in plates and composite structures [12][13][14][15][16][17][18][19][20]. Good experimental results have been reported in several publications like [11,21].…”
Section: Introductionmentioning
confidence: 99%
“…Besides time‐frequency methods, nonlinear method, time‐reverse, and matching pursuit (MP) are also employed to enhance the waveform features. Wang 16 proposed an improved virtual time reversal to eliminate the transducer influence. Metya 17 used nonlinear excitation to analyze the localized deformation.…”
Section: Introductionmentioning
confidence: 99%