Wave propagation in delaminated beam

W. Ostachowicz, M. Krawczuk, M. Cartmell, M. Gilchrist

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The wave propagation model investigated herein is based on the known fact that material discontinuities affect the propagation of elastic waves in solids. The change in certain material characteristics, such as a local change in stiffness or inertia caused by a crack or the presence of material damage, will affect the propagation of transmitted elastic waves and will modify the received signal. Wave frequencies associated with the highest detection sensitivity depend, among other things, on the type of structure, the type of material, and the type of damage. This paper presents a method of wave propagation, which can be further used to detect small delaminations in beam-like structures. The considered beam is modelled by spectral finite elements.
Original languageEnglish
Pages (from-to)475-483
Number of pages9
JournalComputers and Structures
Volume82
Issue number6
DOIs
Publication statusPublished - 31 Mar 2004

Keywords

  • wave propagation
  • spectral element
  • damage detection
  • delamination
  • composite materials

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