レーザーピーニングの橋梁溶接部への適用

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タイトル別名
  • Application of Laser Peening to Welded Joints in Steel Bridges
  • レーザーピーニング ノ キョウリョウ ヨウセツブ エ ノ テキヨウ

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抄録

Many fatigue cracks from welded joints have been detected in steel bridges. Among various methods to improve the fatigue strength of welded zones, this paper focuses on laser peening, which introduces compressive residual stresses on surfaces because they effectively enhance the fatigue lives of welded components. Tensile residual stress due to welding is one of the most prominent factors to reduce fatigue lives. Even though structural steels are widely used for bridges and buildings, the effects of laser peening on them remains unestablished, especially on the welded zones. In this paper, we review the results of recent studies related to the effects of laser peening on the welded zones of structural steel.

収録刊行物

  • レーザー研究

    レーザー研究 42 (6), 477-, 2014

    一般社団法人 レーザー学会

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