Impact Location on a Fan-Ring Shaped High-Stiffened Panel Using Adaptive Energy Compensation Threshold Filtering Method

Li, Yibo; Wang, Zhe; Rui, Xiaobo; Qi, Lei; Liu, Jiawei; Yang, Zi

doi:10.3390/app9091763

Cited by 12 publications

(9 citation statements)

References 46 publications

(58 reference statements)

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“…Wang et al [ 16 ] proposed an Adaptive Energy Compensated Threshold Filtering (AECTF) method based on acoustic emission, which can achieve large-scale, fast, and accurate localization of impact sources in reinforced slabs with less resource consumption. Qi et al [ 17 ] proposed an algorithm for impact localization of reinforced structures based on posterior probability correlation, which combines the Gaussian correlation likelihood weighting method and the Bayesian posterior probability method to further optimize the localization results.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Source Localization in CFRP Composite Plate Based on Wave Velocity-Direction Function Fitting

Feng

Rui

et al. 2023

Sensors

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Composite materials are widely used, but they are often subjected to impacts from foreign objects, causing structural damage. To ensure the safety of use, it is necessary to locate the impact point. This paper investigates impact sensing and localization technology for composite plates and proposes a method of acoustic source localization for CFRP composite plates based on wave velocity-direction function fitting. This method divides the grid of composite plates, constructs the theoretical time difference matrix of the grid points, and compares it with the actual time difference to form an error matching matrix to localize the impact source. In this paper, finite element simulation combined with a lead-break experiment is used to explore the wave velocity-angle function relationship of Lamb waves in composite materials. The simulation experiment is used to verify the feasibility of the localization method, and the lead-break experimental system is built to locate the actual impact source. The results show that the acoustic emission time-difference approximation method can effectively solve the problem of impact source localization in composite structures, and the average localization error is 1.44 cm and the maximum localization error is 3.35 cm in 49 experimental points with good stability and accuracy.

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Section: Introductionmentioning

confidence: 99%

Acoustic Source Localization in CFRP Composite Plate Based on Wave Velocity-Direction Function Fitting

Feng

Rui

et al. 2023

Sensors

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“…Most of the above impact location studies are based on flat plates, which cannot be utilized for spacecraft structures directly. Aiming at this problem, Li et al [17] proposed an adaptive energy compensation threshold filtering algorithm to achieve an accurate impact location in stiffened aluminum plates. Nevertheless, the filter band in this method needs to be reselected for different structures, and the number of sensors is small with the insufficient stability of the location results.…”

Section: Introductionmentioning

confidence: 99%

An Impact Location Algorithm for Spacecraft Stiffened Structure Based on Posterior Possibility Correlation

Zeng

Sun

et al. 2020

Sensors

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In order to ensure the safety of spacecrafts in orbit, impact location is an important part of structural health monitoring systems. In this paper, an impact location algorithm based on posterior probability correlation is proposed to solve the problem, that is, the impact point in the stiffened structure of a spacecraft is difficult to locate. The algorithm combines the Gaussian cross-correlation possibility weight method and the Bayesian posterior probability method. The cross-correlation possibility weight superposition based on grids was used to reduce the dependence of the accuracy of time difference extraction. Gaussian and normalized fitting were used to compensate the reflection, modal transformation, and amplitude attenuation of a stiffened plate. The location result was further optimized by the posterior probability. The proposed algorithm can be applied to the impact source localization of complex stiffened plate structures. The experiment results showed that the average location error can be 2.57 cm with proper sensor network schemes.

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“…By comparing the real signal with the MP model, the impact location can be identified. Li et al [16] proposed an adaptive energy compensation threshold TDOA method. Compare with the traditional method, this method uses energy factors to adjust the threshold according to the signals.…”

Section: Introductionmentioning

confidence: 99%

An Impact Location Method Based on Transmission Coefficient Weighted Impact Intensity

Yue

Rui

2020

IEEE Access

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The stiffened plate has complex influences on the propagation characteristics of Lamb waves, which causes difficulties for the impact location. In order to realize the impact location in stiffened plate, this paper proposes a transmission coefficient weighted impact intensity (TCWII) method. The method uses cross-correlation curves to calculate impact intensity maps and reduce the location error by superposing the maps of different filter bands. The transmission coefficient weights for different bands are applied to compensate for the effect of the stiffeners on the signal propagation. By finding the maximum impact intensity point in the transmission coefficient weighted impact intensity map, the impact point can be located. To evaluate the performance of the TCWII method, 130 sets of experiments have been taken. The location result shows the TCWII method can achieve good performance in stiffened plate with an average error of 2.29 cm in 50cm×50cm testing range. The comparation with the traditional TDOA method shows the TCWII has improvement on accuracy in stiffened plates.

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Impact Location on a Fan-Ring Shaped High-Stiffened Panel Using Adaptive Energy Compensation Threshold Filtering Method

Cited by 12 publications

References 46 publications

Acoustic Source Localization in CFRP Composite Plate Based on Wave Velocity-Direction Function Fitting

Acoustic Source Localization in CFRP Composite Plate Based on Wave Velocity-Direction Function Fitting

An Impact Location Algorithm for Spacecraft Stiffened Structure Based on Posterior Possibility Correlation

An Impact Location Method Based on Transmission Coefficient Weighted Impact Intensity

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