Fatigue Life and Corrosion Fatigue Life Prediction of Welded Joints of Structural Steel Containing Planar Defects
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概要
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Planar defects in the butt welded joints of a high tensile steel are measured by ultrasonic testing with a point focused angle probe, and the results are related to the fatigue life prediction in air and sewater for the joints containing those defects. The fatigue lines for the defective specimens are predicted based on a linear fracture mechanics using fatigue crack growth data of weld metal in air and those of base metal in saltwater in the literature. It is shown that a reasonably close agreement between the predicted and observed lives is obtainable for both fatigue and corrosion fatigue. It is concluded that accurate prediction of the fatigue life and corrosion fatigue life is possible, provided the defect shape is detected by a nondestructive testing with the accuracy equivalent to that in this work. The significance of accuracy of measured defect size in predicting the life is also discussed.
- The Iron and Steel Institute of Japanの論文
The Iron and Steel Institute of Japan | 論文
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