Three-dimensional flaw reconstruction from waveforms measured on the side of a cylinder

Masaki Yamada, Kenji Murakami, Kazuyuki Nakahata, Michihiro Kitahara

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A modified three-dimensional inverse scattering method is applied to reconstruct the shape of a three-dimensional flaw in a cylindrical specimen. In this modified method, a measurement plane is restricted to the plane perpendicular to the axis of the cylindrical specimen. Thus the cross-sectional image of the flaw can be obtained. By moving the measurement plane along the axis of the cylindrical specimen, the cross-sectional image is obtained for each measurement plane. The three-dimensional flaw image is reconstructed by piling up the obtained cross-sectional images. Cylindrical specimens with a cylindrical cavity model and with a hemi- spheroidal cavity model are prepared. The performance of the modified method to reconstruct the three-dimensional flaw is verified by using the experimentally measured waveforms.

Original languageEnglish
Pages (from-to)193s-200s
JournalStructural Engineering/Earthquake Engineering
Volume22
Issue number2
DOIs
Publication statusPublished - 2005

Keywords

  • Cross-sectional imaging
  • Pulse-echo method
  • Shape reconstruction
  • Three-dimensional flaw

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Arts and Humanities (miscellaneous)
  • Geotechnical Engineering and Engineering Geology

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