Rayleigh wave propagation for the detection of near surface discontinuities: Finite element modeling

A. Zerwer, M. A. Polak*, Juan Carlos Santamarina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

The paper presents a finite element study designed to gain physical insight into the effect of surface discontinuities on Rayleigh wave propagation in structural elements. In particular, a series of array measurements at various locations within a plate are simulated and compared with experimental measurements. Conversion of array measurements into the frequency-wavenumber domain reveals propagating Lamb modes, which are used to define Rayleigh wave motion. Numerical results show that Rayleigh waves measured after passing a fracture are composed of long wavelength Rayleigh wave energy propagating past the slot and short wavelength Rayleigh wave energy formed behind the slot.

Original languageEnglish (US)
Pages (from-to)39-52
Number of pages14
JournalJournal of Nondestructive Evaluation
Volume22
Issue number2
DOIs
StatePublished - Jun 1 2003

Keywords

  • Defect dimension
  • Finite elements
  • Lamb waves
  • Mode shapes
  • Plates
  • Rayleigh waves

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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