THREE-DIMENSIONAL FLAW RECONSTRUCTION FROM WAVEFORMS MEASURED ON THE SIDE OF A CYLINDER

• YAMADA Masaki

  Dept. of Civil Eng., Tohoku Univ.

• MURAKAMI Kenji

  Nishimatu Construction Co. Ltd.

• NAKAHATA Kazuyuki

  Faculty of Eng., Ehime Univ.

• KITAHARA Michihiro

  Dept. of Civil Eng., Tohoku Univ.

抄録

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 crosssectional 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.

収録刊行物

• STRUCTURAL ENGINEERING / EARTHQUAKE ENGINEERING

  STRUCTURAL ENGINEERING / EARTHQUAKE ENGINEERING 22 (2), 193S-200S, 2005

  公益社団法人 土木学会

キーワード

• shape reconstruction
• cross-sectional imaging
• three-dimensional flaw
• pulse-echo method

詳細情報

• CRID: 1390282680093560576
• NII論文ID: 130004677899
• DOI: 10.2208/jsceseee.22.193s
• ISSN: 18823424
• ISSN: 02898063
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可