アルミニウム合金製構造体の疲労寿命評価 Fatigue Life Evaluation of Welded Joints of an Aluminum Alloy

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In order to clarify the fatigue behavior of welded joints connecting an outer plate to the keel of a ship made of JIS A 5083 alloy, constant displacement amplitude fatigue tests of the welded joints (four types) were conducted. Additionally, a finite element method (FEM) analysis and residual stress measurements were carried out. The FEM analysis gave a fairly good estimation of the elastic strain distribution near the toe of the weld. The life evaluation procedure was proposed based on Dowing's stress based approach.<br>By analysis incorporating quantitatively the effects of stress concentration, welding residual stress and mean stress on the fatigue life of the welded joints, the relationship giving the 95% confidence limits between the equivalent completely reversed stress amplituede σ<sub>ar</sub> and cycles to failure N<sub>f</sub> was given by the following formula.<br>σ<sub>ar</sub>(MPa)=A⋅N<sub>f</sub><sup>B</sup>: A=702-453, B=-0.17.<br>This empirical relation appears very useful for designing favorable welded joints for shipbuilding purposes.

収録刊行物

  • 圧力技術  

    圧力技術 35(2), 58-64, 1997-03-25 

    HIGH PRESSURE INSTITUTE OF JAPN(HPI)

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各種コード

  • NII論文ID(NAID)
    10002020181
  • NII書誌ID(NCID)
    AN00011762
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03870154
  • NDL 記事登録ID
    4173088
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-750
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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