Identification of delamination position in cross-ply laminated composite beams using S0 Lamb mode

Ning Hu, Takahito Shimomukai, Cheng Yan, Hisao Fukunaga

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


In this work, a Lamb wave based technique has been developed for delamination detection in cross-ply laminated beams. By measuring the propagation speed of S0 Lamb mode and the traveling time of a signal reflected from a delamination site, the location of the delamination can be identified. It has been also confirmed by the experiment that the location of a delamination can be accurately determined by only using the data collected from the sensors in a defect-containing beam, without referring to the baseline signals. Finally, to gain a better understanding of the complex interaction between a Lamb wave and a long delamination, numerical simulations have been carried out using finite element method (FEM). The signal modes generated at the boundaries of the delamination have been analyzed.

Original languageEnglish
Pages (from-to)1548-1554
Number of pages7
JournalComposites Science and Technology
Issue number6
Publication statusPublished - 2008 May
Externally publishedYes


  • A. Polymer-matrix composites
  • A. Smart materials
  • C. Delamination
  • C. Finite element analysis
  • D. Non-destructive testing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)


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