Effect of Residual Stresses on Threshold Value for Fatigue Crack Propagation(Welding Mechanics, Strength & Design)
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概要
- 論文の詳細を見る
The effect of welding tensile residual stresses on threshold value of stress intensity factor range for fatigue crack propagation was studied experimentally. Material used was steel of 800 MPa in tensile strength. Specimens were center-cracked-plates and consited of three kinds ; base metal, welded joint with a longitudinal bead on center of specimen, and stress relieved welded joint. Main results obtained are surmmarized as follows: Tensile residual stresses decreased the threshold value. The lower stress ratio was, the more remarkable the effect of tensile residual stresses on the threshold value was. When tensile residual stresses were large, the threshold value was unique and independent of stress ratio. Above results were closely related with fatigue crack closure phenomena.
- 大阪大学の論文
著者
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HORIKAWA Kohsuke
Osaka University
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SAKAKIBARA Atsushi
Osaka University
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MORI Takeshi
Tokyo Institute of Technology
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Horikawa Kohsuke
Osaka Univ.
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Mori Takeshi
Osaka University:(present Office)tokyo Institute Of Technology
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Sakakibara Atsushi
Osaka University:(present Office)sumishin Fundamentals Institute
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