Effect of surface cracks on Rayleigh wave propagation: An experimental study

A. Zerwer*, M. A. Polak, J. C. Santamarina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

This experimental study investigates the use of Rayleigh waves for crack detection in structural elements. Receiver arrays measure surface accelerations at various locations with respect to a vertical slot cut into a thin Plexiglas sheet. Two-dimensional Fourier transform calculations provide Rayleigh wave dispersion and energy with respect to various slot depths. In addition, autospectrum calculations aid in defining slot location. It is shown that slots reflect short wavelengths and allow the transmission of long wavelengths. Slot location is easily identified from autospectrum measurements; however, accurate determination of slot depth is dependent on the aperture function of the array.

Original languageEnglish (US)
Pages (from-to)240-248
Number of pages9
JournalJournal of Structural Engineering
Volume128
Issue number2
DOIs
StatePublished - Feb 2002
Externally publishedYes

Keywords

  • Cracking
  • Nondestructive evaluation
  • Rayleigh waves
  • Wave propagation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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