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    Microcrack localization using nonlinear Lamb waves and cross-shaped sensor clusters

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    Name:
    Microcrack localization using ...
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    Author
    Yin, Shenxin
    Xiao, Huapan
    Xu, Caibin
    Wang, Jishuo
    Deng, Mingxi
    Kundu, Tribikram
    Affiliation
    College of Aerospace and Mechanical Engineering, University of Arizona
    Issue Date
    2022-05-23
    Keywords
    Contact acoustic nonlinearity (CAN)
    Lamb wave
    Microcrack localization
    Nonlinear ultrasonic technique (NUT)
    Time difference of arrival (TDOA)
    
    Metadata
    Show full item record
    Publisher
    Elsevier B.V.
    Citation
    Yin, S., Xiao, H., Xu, C., Wang, J., Deng, M., & Kundu, T. (2022). Microcrack localization using nonlinear Lamb waves and cross-shaped sensor clusters. Ultrasonics, 124.
    Journal
    Ultrasonics
    Rights
    Copyright © 2022 Elsevier B.V. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Using the nonlinear interaction effect between ultrasonic Lamb waves and microcracks to detect and locate microcracks has the advantages of fast detection speed and high sensitivity. In this paper, a method for microcrack localization based on cross-shaped sensor clusters in a plate is proposed by combining nonlinear ultrasonic Lamb wave technology and time difference of arrival (TDOA) technology. The antisymmetric (A0) mode at low frequency is chosen as the primary Lamb wave to simplify the complication of the dispersion and multi-mode properties of Lamb waves. The selected mode pair (A0-s0) weakens the influence of the cumulative growth effect of higher harmonics induced by the inherent material nonlinearity on the microcrack characteristic signals. Pulse inversion technique and cross correlation function are used to extract the TDOAs of the nonlinear characteristic signals including microcrack information. The cross-shaped sensor clusters approach proposed for the first time can achieve reliable and fast microcrack localization without being affected by the duration of the excitation signal, and a priori knowledge of group velocities of primary wave modes or generated harmonics. Experimental and numerical results validate the proposed method in isotropic and anisotropic plates. This paper provides a new idea for nonlinear ultrasonic nondestructive evaluation and structural health monitoring of microcracks in plates.
    Note
    24 month embargo; available online: 23 May 2022
    EISSN
    1874-9968
    PubMed ID
    35643054
    DOI
    10.1016/j.ultras.2022.106770
    Version
    Final accepted manuscript
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ultras.2022.106770
    Scopus Count
    Collections
    UA Faculty Publications

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