Blind single-channel lamb wave mode separation using independent component analysis on time-frequency signal representation

Wu, Desheng; Yang, Zhibo; Ruan, Yu; Chen, Xuefeng

doi:10.1016/j.apacoust.2023.109810

Applied Acoustics

2024

DOI: 10.1016/j.apacoust.2023.109810

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Blind single-channel lamb wave mode separation using independent component analysis on time-frequency signal representation

Desheng Wu,

Zhibo Yang,

Yu Ruan

et al.

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Cited by 3 publications

References 21 publications

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Non-contact air-coupled transducers Lamb wave signal multipath effect and blind separation for different modes using PZT as receiver

WU,

YANG,

RUAN

et al. 2024

Chinese Journal of Aeronautics

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Non-contact air-coupled transducers Lamb wave signal multipath effect and blind separation for different modes using PZT as receiver

WU,

YANG,

RUAN

et al. 2024

Chinese Journal of Aeronautics

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A Plane Stress Measurement Method for CFRP Material Based on Array LCR Waves

Sun,

Shi,

Tian

et al. 2024

NDT & E International

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Dynamic potential stochastic resonance for weak signal detection

Zong,

An,

Wang

et al. 2024

Phys. Scr.

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To suppress the low-frequency interference noise, a dynamic potential stochastic resonance (DPSR) model is proposed in this paper for weak signal detection. The DPSR model introduces a single dynamic parameter k that simplifies parameter optimization. Its dynamic potential function can adaptively adjust to match noisy input signals. This model provides a new nonlinear model for triggering the SR phenomenon. Experimental results indicate that compared to the traditional methods that rely on clear interference frequency distributions to filter low-frequency components directly, the SR model offers greater flexibility and convenience. Unlike classical SR models, the proposed DPSR model demonstrates a 1.5dB improvement in output performance for suppressing low-frequency interference. Therefore, the DPSR model not only robustly suppresses interference but also effectively enhances and detects characteristic signals in variant-noise environments. Application to sea trial signals highlights the superior performance of the DPSR model in significantly reducing low-frequency interference and improving target signal recognizability compared to other models.

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Blind single-channel lamb wave mode separation using independent component analysis on time-frequency signal representation

Cited by 3 publications

References 21 publications

Non-contact air-coupled transducers Lamb wave signal multipath effect and blind separation for different modes using PZT as receiver

Non-contact air-coupled transducers Lamb wave signal multipath effect and blind separation for different modes using PZT as receiver

A Plane Stress Measurement Method for CFRP Material Based on Array LCR Waves

Dynamic potential stochastic resonance for weak signal detection

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