| Seawater Corrosion Fatigue of Welded Joints Under Random Variable Amplitude Loading |
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| 作者单位： | Xue Yinian，Xu Jilin Li Yanping Li He Professor，Solid Mechanics Division，Institute of Mechanics，Chinese Academy of Sciences，Beijing 100080 Associate Professor，Solid Mechanics Division，Institute of Mechanics，Chinese Academy of Sciences，Beijing 100080 Senior Engineer，Solid Mechanics Division，Institute of Mechanics，Chinese Academy of Sciences，Beijing 100080 |
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| 摘 要： | - Offshore platforms are always subjected to wave action which is random variable amplitude cyclic loading. In order to simulate the stressing condition at the 'hot spot' of the tubular joints and the marine environment, random variable amplitude fatigue tests have been carried out on welded plate joints in sea water. The tests have been conducted under the conditions of loading frequency of 0.2 Hz, stress ratio of -1, seawater temperature of about 20℃ and cathodic protection with the potential about -850 mV, SCE. The test results have been compared with the seawater corrosion fatigue life under constant amplitude loading. Miner's linear cumulative damage summation rule has been used to predict the corrosion fatigue life under variable amplitude loading. The predicted life is in good agreement with the test data.
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Seawater Corrosion Fatigue of Welded Joints Under Random Variable Amplitude Loading |
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| Authors: | Xue Yinian Xu Jilin Li Yanping Li He Professor Solid Mechanics Division |
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| Institution: | Xue Yinian,Xu Jilin Li Yanping Li He Professor,Solid Mechanics Division,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080 Associate Professor,Solid Mechanics Division,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080 Senior Engineer,Solid Mechanics Division,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080 |
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| Abstract: | |
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| Keywords: | seawater corrosion fatigue cathodic protection welded pints random loading offshore structures |
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