Frontiers of Mechanical Engineering >

2009 , Vol. 4 >Issue 3: 326 - 331

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

RESEARCH ARTICLE

Lamb wave propagation modeling for structure health monitoring

  • Xiaoyue ZHANG ,
  • Shenfang YUAN ,
  • Tong HAO
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  • College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received date: 20 Oct 2008

Accepted date: 01 Dec 2008

Published date: 05 Sep 2009

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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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.

Key words： Lamb wave; modeling; LISA/SIM theory; finite difference equation; finite element

Cite this article

Xiaoyue ZHANG , Shenfang YUAN , Tong HAO . Lamb wave propagation modeling for structure health monitoring[J]. Frontiers of Mechanical Engineering, 2009 , 4(3) : 326 -331 . DOI: 10.1007/s11465-009-0045-6

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