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Lamb wave propagation modeling for structure health monitoring

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Abstract

This study aims to model the propagation of Lamb waves used in structure health monitoring. A number of different numerical computational techniques have been developed for wave propagation studies. The local interaction simulation approach, used for modeling sharp interfaces and discontinuities in complex media (LISA/SIM theory), has been effectively applied to numerical simulations of elastic wave interaction. This modeling is based on the local interaction simulation approach theory and is finally accomplished through the finite elements software Ansys11. In this paper, the Lamb waves propagating characteristics and the LISA/SIM theory are introduced. The finite difference equations describing wave propagation used in the LISA/SIM theory are obtained. Then, an anisotropic metallic plate model is modeled and a simulating Lamb waves signal is loaded on. Finally, the Lamb waves propagation modeling is implemented.

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Authors and Affiliations

  1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Xiaoyue Zhang, Shenfang Yuan & Tong Hao

Authors
  1. Xiaoyue Zhang
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  2. Shenfang Yuan
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  3. Tong Hao
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Correspondence to Xiaoyue Zhang.

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Zhang, X., Yuan, S. & Hao, T. Lamb wave propagation modeling for structure health monitoring. Front. Mech. Eng. China 4, 326–331 (2009). https://doi.org/10.1007/s11465-009-0045-6

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  • DOI: https://doi.org/10.1007/s11465-009-0045-6

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