A time-reversal assisted probabilistic fusion strategy for damage localization in plate-like structures using Lamb waves

Zhang, Minghui; Zhou, Deyuan; Li, Xiuquan; Yang, Ziqian; Kong, Qingzhao

doi:10.1177/14759217221151040

Cited by 3 publications

(1 citation statement)

References 73 publications

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“…To mitigate this issue, narrowband tone burst excitations with carefully selected frequencies are generally employed to obtain a pure wave mode and minimize the dispersion. Such excitations have been widely employed to evaluate and localize damages [24], while narrowband excitations confront two main challenges for applications in ultrasonicbased structural health monitoring: the determination of the optimal frequency for damage detection [25] and the nonmonotonic trend of damage index with the increasing of defects [26].…”

Section: Introductionmentioning

confidence: 99%

Bolt tightness monitoring using multiple reconstructed narrowband Lamb waves combined with piezoelectric ultrasonic transducer

Li,

Liu,

Sun

et al. 2023

Smart Mater. Struct.

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Narrowband tone burst excitation with a carefully selected frequency is generally utilized to generate Lamb waves for mode purity, dispersion diminution and signal interpretability. Narrowband excitation exhibits saturation phenomenon and even non-monotonic trends with the development of bolt looseness. In this research, a piezoelectric ultrasonic transducer with high signal-to-noise ratio is designed and fabricated for bolt tightness monitoring. The chirp signal is utilized to drive the actuator to generate broadband Lamb waves in the connected plate, and a transfer function-based signal reconstruction algorithm is innovatively proposed to extract narrowband tone burst responses with different center frequencies from the broadband chirp response for bolt tightness monitoring. The leaked wave energy-based bolt tightness indexes (TIs) are calculated based on the extracted multiple tone burst responses and a feature-level data fusion strategy is proposed to combine the TIs for exploiting the merits of different-frequency inspecting waves for different bolt tightness conditions. The fused TI not only presents a monotonic tendency with the increasing of bolt tightness, but also tackles the low sensitivity of narrowband Lamb waves for embryo bolt looseness. The proposed method contributes a novel and stable scheme for bolt tightness monitoring and opens a new perspective for damage evaluation of structures.

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Section: Introductionmentioning

confidence: 99%

Bolt tightness monitoring using multiple reconstructed narrowband Lamb waves combined with piezoelectric ultrasonic transducer

Li,

Liu,

Sun

et al. 2023

Smart Mater. Struct.

Self Cite

View full text Add to dashboard Cite

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Uncertainties quantification for damage localization in concrete based on Bayesian method

Zhang,

Zhou,

Yang

et al. 2024

Probabilistic Engineering Mechanics

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Enhanced damage localization in plate-like concrete structures leveraging modified delay-and-sum method

Zhang,

Zhou,

Sun

et al. 2024

Structural Health Monitoring

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With the purpose of achieving the precise and quantitative damage monitoring in the concrete medium, the methodology based on the stress wave has secured its popularity and utilized prevailingly. This study introduces a modified delay-and-sum (DAS) damage localization method and a mesolevel concrete numerical model that incorporates the inherent randomness of polygon aggregates distribution. In order to realize the localization of multiple impairments within concrete, the propagation characteristics of stress waves are leveraged to present a damaged subarea determination strategy. This strategy serves as an initial processing stage for damage localization by discerning the effective sensing paths. Additionally, the proposed damage probability distribution function integrated with damage information obtained from the effective sensing paths are employed to accurately pinpoint the location of damage in concrete. Moreover, concrete is comprehensively regarded as a three-phase composite material consisting of aggregate, mortar, and the interface transition zone. By employing mesolevel numerical models, the intricate interaction between stress waves and the internal structures of concrete is revealed. Subsequently, response signals are extracted from the mesolevel concrete models, and meticulous numerical validations are conducted to assess the efficacy of the proposed method. Furthermore, experimental tests are conducted on a concrete slab equipped with embedded tubular piezoelectric transducers. The results demonstrate that the proposed method achieves accurate damage localization with minimal artifact and interference area, surpassing the capabilities of conventional DAS methods. This study validates the potential and feasibility of the proposed method in accurately locating multiple impairments within concrete.

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A time-reversal assisted probabilistic fusion strategy for damage localization in plate-like structures using Lamb waves

Cited by 3 publications

References 73 publications

Bolt tightness monitoring using multiple reconstructed narrowband Lamb waves combined with piezoelectric ultrasonic transducer

Bolt tightness monitoring using multiple reconstructed narrowband Lamb waves combined with piezoelectric ultrasonic transducer

Uncertainties quantification for damage localization in concrete based on Bayesian method

Enhanced damage localization in plate-like concrete structures leveraging modified delay-and-sum method

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