Damage localization in cross-ply laminated composite plates under varying temperature conditions using Lamb waves

Nandyala, Anvesh R.; Darpe, Ashish K.; Singh, Shveta

doi:10.1088/1361-6501/ab6eca

Cited by 12 publications

(7 citation statements)

References 29 publications

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“…The fiber Bragg grating (FBG) sensors [18] can easily form a network without causing damage to the composite plate structures. And the FBG sensors have the advantages of small sizes, high flexibility, sensitivity, and anti-electromagnetic interference ability [19,20]. So the FBG sensors are widely used in many fields of SHM, such as damage detection of highway bridges and impact localization of composite materials.…”

Section: Introductionmentioning

confidence: 99%

Multi FBG sensor-based impact localization with a hybrid correlation interpolation method

Liangya¹,

Jiang²,

Luo³

et al. 2022

Meas. Sci. Technol.

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To locate the impact source of a composite material structure with a series of Fiber Bragg grating (FBG) sensors, a hybrid correlation interpolation (HCI) method is proposed, in this paper, based on a weighted correlation analysis and a unidirectional cubic spline interpolation. First, the signals collected by FBG sensors are preprocessed on the frequency domain to reduce noise interference. Second, the impact similarity map is built by using the weighted cross-correlation value to estimate the location of the impact roughly. Third, the similarity map is further subdivided by the unidirectional cubic spline interpolation to increase the impact localization. Fourth, the FBG sensor network is experimental analyzed to optimize the layout and the structure of the FBG sensor network. The validity of the multi FBG sensor-based impact localization method is verified on a carbon fiber composite plates with a size of 650 × 500 (mm). The experimental result shows that the Mean Absolute Error (MAE) is 9.74mm for our suggested method and 15.51mm for the bicubic polynomial interpolation (BPI) algorithm, which is reduced by 5.77mm. The maximum errors are 36.40mm for the BPI algorithm while are reduced to 21.55mm for our suggested method. Furthermore, the effect of FBG sensor combination layout and number on impact location accuracy is analyzed and compared. It shows that the sensor network layout of rectangular structure using four FBG sensors is a better choice after the comprehensive consideration of economic benefits, localization accuracy, and Error Rate (ER).

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Section: Introductionmentioning

confidence: 99%

Multi FBG sensor-based impact localization with a hybrid correlation interpolation method

Liangya¹,

Jiang²,

Luo³

et al. 2022

Meas. Sci. Technol.

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show abstract

“…[1][2][3][4][5][6][7][8][9][10][11] Most of the reported literature is related to identifying and localising damage using the narrowband excitation signal. [12][13][14][15][16][17][18][19][20] The sensitivity of the narrowband excitation signal to the damage width depends on the excitation signal's centre frequency. Lowe et al 21 found that the reflection coefficient from the damage site exhibited a cosinusoidal periodic shape with a notch width.…”

Section: Introductionmentioning

confidence: 99%

Damage severity assessment in composite structures using multi-frequency lamb waves

Nandyala

Darpe

Singh

2022

Structural Health Monitoring

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When a narrowband tone burst excitation signal is used to generate Lamb waves in the thin composite plates, a suitable frequency of the excitation signal is typically chosen to excite a solitary mode of Lamb wave in the structure. However, if and as the damage severity changes in the structure, it may be possible that the frequency of the excitation signal may influence the response metric. In the present work, the use of a chirp signal as an excitation signal for damage severity assessment is proposed. The use of a chirp signal as an excitation signal may prove suitable for damage severity assessment because the chirp response contains a large frequency bandwidth, and the cumulative effect of all the frequencies with the delamination is reflected in the damage index. The sensitivity of the chirp response to varying delamination sizes is investigated through numerical simulations and experiments. The damage index calculated using the chirp response showed a monotonic trend with an increase in damage severity, in contrast to a bidirectional trend of the damage index when conventional narrow excitation signals are used.

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“…The isolated signals are regarded as a specific signature to indicate the presence of structural damage. However, reliable baseline data are extremely difficult and impractical to obtain in realistic conditions due to varying environmental and operational conditions, such as fluctuations in temperature [ 14 , 15 ], variation in surface moisture [ 16 , 17 ], vibrations, loading conditions [ 18 , 19 , 20 ], and so forth. As a result, the baseline-dependent method can identify damages that are sometimes mistaken in the presence of these varying conditions.…”

Section: Introductionmentioning

confidence: 99%

A Novel Baseline-Free Damage Detection Method Based on Path Scanning of Lamb Waves Using Mobile Transducers

Yuan

Zhou

et al. 2022

Sensors

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The baseline-free damage detection method of Lamb waves has the potential to obtain damage information efficiently in plate structures through damage scattering signals. However, the missing detection of damage occurs occasionally due to the angular scattering characteristic of Lamb waves. To solve this problem, a novel baseline-free damage detection approach based on path scanning at the detection region edges using mobile piezoelectric transducers is proposed herein. Several sensing points carrying separated damage scattering signals were picked out from the scanning paths. By removing the direct and boundary reflected signals, the damage signals were extracted and exported to a delay-and-sum imaging method to locate the damage. Two experiments with and without mobile transducers were conducted to validate the proposed method on an aluminum plate with artificially fabricated crack-like damage. The results show that the proposed baseline-free approach can locate the crack-like damage with high accuracy and efficiency and avoid potential loss of damage information. The proposed baseline-free method provides a novel and practical damage detection approach when considering the angular-dependent scattering characteristic of Lamb waves and can enhance the credibility of results in damage detection.

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Damage localization in cross-ply laminated composite plates under varying temperature conditions using Lamb waves

Cited by 12 publications

References 29 publications

Multi FBG sensor-based impact localization with a hybrid correlation interpolation method

Multi FBG sensor-based impact localization with a hybrid correlation interpolation method

Damage severity assessment in composite structures using multi-frequency lamb waves

A Novel Baseline-Free Damage Detection Method Based on Path Scanning of Lamb Waves Using Mobile Transducers

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