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首页> 外文期刊>International journal of comadem >Image reconstruction of subsurface damage in unidirectional fiber composite laminate by dynamic shear strain analysis of lamb wave- a numerical approach
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Image reconstruction of subsurface damage in unidirectional fiber composite laminate by dynamic shear strain analysis of lamb wave- a numerical approach

机译：兰姆波动态剪切应变分析在单向纤维复合材料层压板表面损伤图像重建中的应用

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摘要

Composite laminates (CL) widely used in various engineering applications due to their high strength-to-weight ratios. Defects could inadvertently bernproduced in those, either during the manufacturing process or in the course of normal service lifetime of the component. Damage detection drawn muchrnmore attention during the design, operation, maintenance and repair of equipment involving CL. Moreover, subsurface damage could be endangering forrnthe structural integrity. The dynamic shear strain analysis is a damage identification technique dealing with the overlapping of incident wave with thernscattered wave from the finite defect in a plate. This investigation presents an application of such technique to detect the subsurface defect in horizontallyrntransverse isotropic (HTI) media focusing on unidirectional fiber CL. Several numerical experiments carried out considering the fiber direction of the plate.rnA0 mode of Lamb wave chosen over S0 mode due to its shorter wavelength and high sensitivity to identify subsurface damage. The analytical data of outof-rnsurface displacement obtained by using the multiphysics simulation software package LS-DYNA. The defect detection algorithm is based on thernrecorded time series signals of the orthogonal pair of out-of-surface shear strains. The numerical simulated result of the algorithm is presented in the formrnof image of the shape of the defect.
机译：复合层压板（CL）的高强度重量比使其广泛用于各种工程应用。在制造过程中或在组件的正常使用寿命期间，可能会无意中产生缺陷。在涉及CL的设备的设计，操作，维护和维修期间，损坏检测引起了更多的关注。而且，地下破坏可能危及结构完整性。动态剪切应变分析是一种损伤识别技术，用于处理入射波与来自板中有限缺陷的散射波的重叠。这项研究提出了这种技术的应用，以检测集中在单向光纤CL的水平横向横向各向同性（HTI）介质中的地下缺陷。考虑到板的纤维方向进行了一些数值实验。兰姆波的rnA0模式比S0模式更易选择，因为它的波长短且能识别地下损伤。使用多物理场仿真软件包LS-DYNA获得的地表外位移分析数据。缺陷检测算法基于正交记录的表面外剪切应变对的时间序列信号。该算法的数值模拟结果显示在缺陷形状的formrnof图像中。

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  • 来源
    《International journal of comadem》 |2018年第1期|3-8|共6页
  • 作者

    M. Sanaul Rabbi; K. Teramoto; Md. T. I. Khana;

  • 作者单位

    Department of Advanced Technology Fusion, Graduate School of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan;

    Department of Advanced Technology Fusion, Graduate School of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan;

    Department of Advanced Technology Fusion, Graduate School of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Composite laminate; Subsurface damage; Lamb wave; Finite element analysis;

    机译：复合层压板;地下破坏;羊肉波有限元分析;

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