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Mechanical test study on corroded marine high performance steel under cyclic loading
Highlights Corroded specimens with different section loss are prepared by laboratory electrochemical corrosion method to analyze the corrosion damage on marine high performance steel NV-D36. According to the characteristics of marine cyclic loadings, different types of cyclic loading schemes are designed to carry out cyclic test on both uncorroded and corroded specimens. The influence of corrosion damage, cumulative fatigue damage and double damage caused by the coupling of these two on the mechanical properties of steel is analyzed and discussed.
Abstract It is inevitable that marine structures suffer from corrosion and extreme cyclic loading. In order to study the influence of corrosion damage and cumulative fatigue damage on mechanical properties of marine steel, high performance steel NV-D36 was analyzed under electrochemical corrosion and cyclic loading. It was found that corrosion damage can reduce the elastic modulus, yield strength, ultimate stress and ultimate strain of steel NV-D36. And it was also found that cumulative fatigue damage will increase the ultimate stress of steel NV-D36 and reduce the ultimate strain of steel NV-D36. The effect of double damage on mechanical properties of steel NV-D36 was coupled with these two kinds of damage. The Chaboche model parameters calibrated under incremental cyclic loading scheme can exactly describe the stiffness and peak stress of steel NV-D36.
Mechanical test study on corroded marine high performance steel under cyclic loading
Highlights Corroded specimens with different section loss are prepared by laboratory electrochemical corrosion method to analyze the corrosion damage on marine high performance steel NV-D36. According to the characteristics of marine cyclic loadings, different types of cyclic loading schemes are designed to carry out cyclic test on both uncorroded and corroded specimens. The influence of corrosion damage, cumulative fatigue damage and double damage caused by the coupling of these two on the mechanical properties of steel is analyzed and discussed.
Abstract It is inevitable that marine structures suffer from corrosion and extreme cyclic loading. In order to study the influence of corrosion damage and cumulative fatigue damage on mechanical properties of marine steel, high performance steel NV-D36 was analyzed under electrochemical corrosion and cyclic loading. It was found that corrosion damage can reduce the elastic modulus, yield strength, ultimate stress and ultimate strain of steel NV-D36. And it was also found that cumulative fatigue damage will increase the ultimate stress of steel NV-D36 and reduce the ultimate strain of steel NV-D36. The effect of double damage on mechanical properties of steel NV-D36 was coupled with these two kinds of damage. The Chaboche model parameters calibrated under incremental cyclic loading scheme can exactly describe the stiffness and peak stress of steel NV-D36.
Mechanical test study on corroded marine high performance steel under cyclic loading
Jia, Ziyue (author) / Yang, Yang (author) / He, Zheng (author) / Ma, Houbiao (author) / Ji, Fei (author)
2019-09-17
Article (Journal)
Electronic Resource
English
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