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YANG Chao, ZHANG Yajun. Study on Experiment of D-N Fatigue Curve of Fillet Weld Joint of Pipe Seat[J]. Development and Application of Materials, 2021, 36(1): 77-82.
Citation: YANG Chao, ZHANG Yajun. Study on Experiment of D-N Fatigue Curve of Fillet Weld Joint of Pipe Seat[J]. Development and Application of Materials, 2021, 36(1): 77-82.
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Study on Experiment of D-N Fatigue Curve of Fillet Weld Joint of Pipe Seat

  • 1. Jiangsu Frontier Electric Technology Co. Ltd., Nanjing 211102, China;

  • 2. Luoyang Ship Material Research Institute, Luoyang 471023, China;

  • 3. Henan Key Laboratory of Technology and Application of Structural Materials for Ships and Marine Equipments, Luoyang 471023, China

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  • Received Date: May 11, 2020
    Graphical Abstract
    • Abstract
  • The weld joint of large diameter thick wall tube and small diameter tube of boiler always fails in view of fatigue action, and this failure mostly hails from periodic bending stress by small load and long lever arm. In this paper, based on characteristics and service condition of the pipe joint of pressure parts of the boiler, the specimen was designed. By cantilever bend loading mode, displacement-life curve of the fillet weld joint of pipe seat for the boiler, namely D-N curve, were studied by group-method. The results manifested that D-N curve could be used for finite life design of the fillet weld joint of pipe seat for the boiler and D-N data distribution could be expressed by power function rule, which would provide reference for assessment of fatigue life of the fillet weld joint of pipe seat for the boiler.
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    • References (9)
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