Near-Threshold Fatigue Crack Propagation in Welded Joints under Random Loadings

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概要

• 論文の詳細を見る

• 62 level block fatigue loadings in which waveform was approximate to the Rayleigh distribution of peaks (distribution factor=0.25, 0.5 and 1) were applied on center-cracked transverse butt welded joints in which tensile residual stresses were always induced at the crack tip. It was revealed that the fatigue crack propagation rate, da/dn^*, could be estimated by the result obtained from constant amplitude tests assuming a linear cumulative damage law. That is, da/dn^*=C(ΔK_<eq^>^<*m>-ΔK_<th>^m) where ΔK_<eq>^*={Σ(ΔK_i^mn_i)/Σn_i}^<1/m>, ni=0 at ΔK_i≦ΔK_<th> or n_i=n_i at ΔK_i>ΔK_<th>.

• 社団法人溶接学会の論文
• 1988-10-01

著者

• Maeda Yoshio

  National Research Institute For Metals

• Machida S

  Univ. Tokyo

• OHTA Akihiko

  National Research Institute for Metals

• OHTA Akihiko

  Quarterly Journal of Japan Welding Society

• MAEDA Yoshio

  Quarterly Journal of Japan Welding Society

• MACHIDA Susumu

  National Research Institute for Metals

• YOSHINARI Hitoshi

  National Research Institute for Metals

• Ohta A

  National Res. Inst. For Metals (nrim)

• Yoshinari H

  Univ. Tokyo

• Yoshinari Hitoshi

  National Maritime Research Institute

関連論文

• Effect of Structural Discontinuities of Welded Joints on Brittle Crack Propagation Behavior : Brittle Crack Arrest Design for Large Container Ships-3
• Fatigue Crack Propagation Curve for Design of Welded Structures
• Near-Threshold Fatigue Crack Propagation in Welded Joints under Random Loadings
• Development of Brittle Crack Arrest Toughness K_ Test Method : Brittle Crack Arrest Design for Large Container Ships-2
• Required Brittle Crack Arrest Toughness K_ Value with Actual Scale Model Tests : Brittle Crack Arrest Design for Large Container Ships-4
• Study on Fracture Strength Assessment of Structural Components
• 11. Study On Fracture Strength Assessment
• Development of Guidelines on Brittle Crack Arrest Design : Brittle Crack Arrest Design for Large Container Ships-1
• Effect of Residual Tensile Stresses on Threshold Level for Fatigue Crack Propagation in Welded Joints of SM50B Steel
• Experimental Study on Brittle Crack Propagation Behavior with Large Scale Structural Component Model Tests : Brittle Crack Arrest Design for Large Container Ships-5
• Thickness Effect on the Brittle Crack Arrest Toughness Value (K_) : Brittle Crack Arrest Design for Large Container Ships-6

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