Time reversal and non-linear elastic wave spectroscopy (TR NEWS) techniques

T. J. Ulrich, A. M. Sutin, R. A. Guyer, P. A. Johnson

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

Non-linear elastic wave spectroscopy (NEWS) has been shown to exhibit a high degree of sensitivity to both distributed and isolated non-linear scatterers in solids. In the case of an isolated non-linear scatterer such as a crack, by combining the elastic energy localization of time reversal (TR) with NEWS, it is shown that one can isolate non-linear scatterers in solids. The experiments reviewed here present two distinct methods of combining TR and NEWS for this purpose. The techniques each have there own advantages and disadvantages, with respect to each other and other non-linear methods, which are discussed.

Original languageEnglish
Pages (from-to)209-216
Number of pages8
JournalInternational Journal of Non-Linear Mechanics
Volume43
Issue number3
DOIs
StatePublished - Apr 2008

Keywords

  • Crack characterization
  • Imaging
  • Non-destructive evaluation
  • Non-linear elasticity
  • Time reversed acoustics

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