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《Journal of Ship Mechanics》 2003-02
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Fatigue Testing in Welded Joint of 980-grade Steels

LENG Jian-xing, YIN Qiang, DING Rong-hua, XU Bing-han(China Ship Scientific Research Center, Wuxi 214082, China)  
The fatigue strength is closely related to the material,the structural arrangement,the manufacture technology as well as the levels of the stress and strain.And the testing-frequency is closely related to the fatigue life too when the alternate stress is higher than yield stress.In the fatigue tests this paper used the stress-control when the real stress is lower than the yielding stress,and used the strain-control when the calculated strain higher than the yield strain.On this basis,several fatigue test models were designed.Fatigue strength tests for the butt-welded joint and the T-typed welded joint were carried out.The test results show that it is useful for the design of the structure of the 980-grade steel.
【CateGory Index】： U671.83
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