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    Analysis on Power Flow of Lamb Waves Generated by Laser Illumination in Carbon Fiber-Reinforced Plastic Laminates

    Source: Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems:;2024:;volume( 007 ):;issue: 004::page 41006-1
    Author:
    Zhang, Zeping
    ,
    Saito, Osamu
    ,
    Okabe, Yoji
    DOI: 10.1115/1.4065864
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Laser ultrasonics using guided waves excited by laser irradiation has attracted attention as an efficient nondestructive inspection method for carbon fiber-reinforced plastic (CFRP) composite laminates. In this article, to clarify the properties of laser-excited Lamb waves, we investigate the power flow of Lamb waves in an anisotropic CFRP laminate. The temperature rising caused by laser absorption is analytically calculated, and the derived thermal force is input to a finite element model to simulate the generation of Lamb waves. It is found that the power flow has an obvious directivity in a quasi-isotropic CFRP laminate. The power flow is smaller in the direction parallel to the carbon fibers of the surface layer and is larger in the perpendicular direction, but the maximum is in a slightly different direction; this result was validated by an experiment. Such directivity pattern is determined by two factors: the distribution of thermal force and the stacking sequence of CFRP laminates. Moreover, we investigate the different simulation models (metal-coated CFRP and cross-ply CFRP) to discuss the influence of each factor on the distribution of power flow separately.
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      Analysis on Power Flow of Lamb Waves Generated by Laser Illumination in Carbon Fiber-Reinforced Plastic Laminates

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4303592
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    contributor authorZhang, Zeping
    contributor authorSaito, Osamu
    contributor authorOkabe, Yoji
    date accessioned2024-12-24T19:15:20Z
    date available2024-12-24T19:15:20Z
    date copyright7/18/2024 12:00:00 AM
    date issued2024
    identifier issn2572-3901
    identifier othernde_7_4_041006.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4303592
    description abstractLaser ultrasonics using guided waves excited by laser irradiation has attracted attention as an efficient nondestructive inspection method for carbon fiber-reinforced plastic (CFRP) composite laminates. In this article, to clarify the properties of laser-excited Lamb waves, we investigate the power flow of Lamb waves in an anisotropic CFRP laminate. The temperature rising caused by laser absorption is analytically calculated, and the derived thermal force is input to a finite element model to simulate the generation of Lamb waves. It is found that the power flow has an obvious directivity in a quasi-isotropic CFRP laminate. The power flow is smaller in the direction parallel to the carbon fibers of the surface layer and is larger in the perpendicular direction, but the maximum is in a slightly different direction; this result was validated by an experiment. Such directivity pattern is determined by two factors: the distribution of thermal force and the stacking sequence of CFRP laminates. Moreover, we investigate the different simulation models (metal-coated CFRP and cross-ply CFRP) to discuss the influence of each factor on the distribution of power flow separately.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAnalysis on Power Flow of Lamb Waves Generated by Laser Illumination in Carbon Fiber-Reinforced Plastic Laminates
    typeJournal Paper
    journal volume7
    journal issue4
    journal titleJournal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
    identifier doi10.1115/1.4065864
    journal fristpage41006-1
    journal lastpage41006-10
    page10
    treeJournal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems:;2024:;volume( 007 ):;issue: 004
    contenttypeFulltext
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