Three-dimensional flaw shape reconstruction by linearized inverse scattering method

Masaki Yamada, Hiroyuki Miyakoshi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The linearized inverse scattering method reconstructs the shape of flaw by low frequency wave data obtained by ultrasonic measurement. It is possible for this method to be a practical NDE method for concrete structures. Performances of the two-dimensional inversion formulae have been studied by both numerical simulation and experimental measurement. In contrast, no experimental shape reconstruction by three-dimensional inversion formulae has been studied. In this study, numerical simulation is used to discuss the effects of scattering the amplitude's wavenumber on reconstructed shapes of flaw models. Cement paste specimens are prepared based on the numerical simulations, and backscattered waveforms from all directions surrounding a flaw model are obtained. The wave data are fed into inversion formulae, and performances of the method are verified by comparison with X-ray CT scan images.

Original languageEnglish
Pages (from-to)133-141
Number of pages9
JournalDoboku Gakkai Ronbunshuu A
Volume64
Issue number1
DOIs
Publication statusPublished - 2008

Keywords

  • Born inversion
  • Inverse scattering analysis
  • Kirchhoff inversion
  • Linearized inverse scattering methods
  • Quantitative ultrasonic nondestructive testing

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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