STUDY ON PRACTICAL ULTRASONIC INSPECTION METHOD FOR FATIGUE CRACKS IN STEEL ORTHOTROPIC DECKPLATES

DOI
  • MURAKOSHI Jun
    (独)土木研究所 構造物メンテナンス研究センター橋梁構造研究グループ
  • TAKAHASHI Minoru
    (独)土木研究所 構造物メンテナンス研究センター橋梁構造研究グループ
  • KOIKE Mitsuhiro
    菱電湘南エレクトロニクス(株) 検査計測事業部システム部
  • KIMURA Tomonori
    三菱電機(株) 情報技術総合研究所アンテナ技術部波動素子グループ

Bibliographic Information

Other Title
  • 臨界屈折角近傍に調整した超音波斜角探触子による鋼床版デッキ進展き裂の探傷法の検討

Abstract

 Fatigue cracks have been recently reported at weld root of deckplate-U type rib connection in orthotropic steel deck bridges on heavy traffic route. These cracks propagate to the upper surface of deckplate, that makes it difficult to detect them during visual inspection. With the purpose of developing a reliable and practical non-destructive inspection method for the cracks, this paper discusses an ultrasonic testing method using SV waves by critical angle beam probe. A reliable technique for the sensitivity calibration was proposed. Based on ultrasonic testing for fatigue crack specimens and a damaged deckplate on actual bridge, applicability of the proposed ultrasonic inspection method was confirmed.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390001205350713856
  • NII Article ID
    130004961262
  • DOI
    10.2208/jscejseee.68.453
  • ISSN
    21854653
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

Report a problem

Back to top