FATIGUE IMPROVEMENT METHOD FOR WELD REPAIRED CRANE RUNWAY GIRDER BY ULTRASONIC IMPACT TREAMENT

DOI

Bibliographic Information

Other Title
  • 補修溶接を施した既設クレーンランウエイガーダーの超音波衝撃処理による疲労寿命向上

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Description

A fatigue improvement method using ultrasonic impact treatment, which improves both toe profile and residual stress condition, was examined. This method is applied to in-plane-gusset detail and out-of-plane gusset detail of existing crane runway girders. Comparison with conventional grinding method was conducted by small joint specimen fatigue tests, and UIT gave much better result. Also, its applicability to mild steel and influence from repair weld is examined through girder fatigue tests. Significant fatigue improvement was obtained for 400MPa class mild steel. Also, the effect is not reduced by repair weld. This result has encouraged the proper application of UIT for existing CRGs.

Journal

  • Kou kouzou rombunshuu

    Kou kouzou rombunshuu 14 (55), 47-58, 2007

    Japanese Society of Steel Construction

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Details 詳細情報について

  • CRID
    1390282680290755712
  • NII Article ID
    130004301357
  • DOI
    10.11273/jssc1994.14.55_47
  • ISSN
    18840329
    18809928
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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