Adaptive Algorithm for Estimating and Tracking the Location of Multiple Impacts on a Plate-Like Structure

Dris, El yamine; Drai, Redouane; Bentahar, Mourad; Berkani, Daoud

doi:10.1080/09349847.2019.1617913

Cited by 7 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dris and Draib et al focused on the uncertainty of measurement of ToF. 11 They used the CWT to obtain the ToF and an extended Kalman filter was applied to locate the AE source location. Overall, the principle of the ToF method is intuitive and straightforward, and the location of the AE source can be determined without a large number of iterations.…”

Section: Introductionmentioning

confidence: 99%

Locating of acoustic emission source for stiffened plates based on stepwise time-reversal processing with time-domain spectral finite element simulation

Zheng

Sun

et al. 2022

Structural Health Monitoring

View full text Add to dashboard Cite

Stiffened thin-walled structures are widely utilized in aerospace engineering as critical load-bearing components. These structures are prone to be damaged from external impact or corrosion, and fatigue cracks. Acoustic emission (AE) is a key phenomenon accompanying damage and can be used as an efficient indicator to locate the damage in stiffened structures. In this paper, a novel AE source locating approach is proposed, which is based on combining the concepts of the time-reversal (T-R) guided wave and time-domain spectral finite element method (T-D SFEM), in which an improved T-R strategy named stepwise T-R is developed to overcome the defocus issue, and the T-D SFEM is utilized to simulate the re-emitted wavefield. Benefit from the improvement and virtual simulation, the focused wavefield can be rapidly obtained without high-cost and large bulk wavefield imagine devices. The approach is validated experimentally. In addition, the effects of the signal length, mesh size, and noise levels on locating are studied in different scenarios. The results show that the proposed approach can locate the AE source in the stiffened plate efficiently and accurately. The optimal signal length and suggested mesh size are also decided. Besides, the robustness of the proposed method is demonstrated and the results are effective in the case of the measured signals with 30% white noise.

show abstract

Section: Introductionmentioning

confidence: 99%

Locating of acoustic emission source for stiffened plates based on stepwise time-reversal processing with time-domain spectral finite element simulation

Zheng

Sun

et al. 2022

Structural Health Monitoring

View full text Add to dashboard Cite

show abstract

“…This analyzer is very stable for long-term measurements and its swept-sine excitation in terms of duration and signal-to-noise-ratio is ideal for the proposed resonance experiments. [8][9][10] Figure 1. Schematic representation of the experimental setup used to perform the dynamic nonlinear measurements…”

Section: Introductionmentioning

confidence: 99%

Contribution of acoustic emission to the characterization of the nonlinear behavior of complex materials

Yu,

Bentahar,

Mechri

et al. 2022

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

View full text Add to dashboard Cite

The present work proposes an original experimental protocol to detect the nonlinear relaxation of concrete samples taken at intact and damaged states. This protocol is based on the passive monitoring of the nonlinear relaxation, which is usually performed using a low amplitude signal (probe) in slow dynamics experiments. Results show the relevance of the passive detection and reveal the existence of a 'silent period' during the first minutes of the nonlinear relaxation after which the AE hits start to be detected. The characteristics of the AE hits recorded during the passive relaxation showed a clear resemblance with those obtained during the damage of the different samples involving shear and compression mechanisms.

show abstract

Probabilistic Technique for Monitoring Damage and Cracking of Concrete

Dris

Drai

Dahou

et al. 2022

Advanced Intelligent Systems for Sustainable Development (AI2SD’2020)

View full text Add to dashboard Cite

Adaptive Algorithm for Estimating and Tracking the Location of Multiple Impacts on a Plate-Like Structure

Cited by 7 publications

References 26 publications

Locating of acoustic emission source for stiffened plates based on stepwise time-reversal processing with time-domain spectral finite element simulation

Locating of acoustic emission source for stiffened plates based on stepwise time-reversal processing with time-domain spectral finite element simulation

Contribution of acoustic emission to the characterization of the nonlinear behavior of complex materials

Probabilistic Technique for Monitoring Damage and Cracking of Concrete

Contact Info

Product

Resources

About