Experiment on Corrosion Fatigue Life of Steel Strands under the Coupling Effects of Chloride Environment and Alternating Loads

Yao, Guowen; Yu, Xuanrui; Gu, Liangcai; Jiang, Yixing

doi:10.1155/2021/2439503

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Their regression analysis of S-N curves displayed a significant inverse correlation between corrosion fatigue life and stress ratio. Yao et al 64 utilized accelerated salt spray corrosion tests to simulate corrosion behaviors in steel strands. Based on their experimental results, it was seen that noting changes in corrosion degrees under alternating loads and chloride environments.…”

Section: Loading Conditionsmentioning

confidence: 99%

Corrosion fatigue mechanisms and evaluation methods of high‐strength steel wires: A state‐of‐the‐art review

Jie,

Zhang,

Susmel

et al. 2024

Fatigue Fract Eng Mat Struct

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Corrosion significantly degrades the fatigue performance of high‐strength steel wires. This study conducts an extensive review of corrosion fatigue in corroded steel wires based on relevant literature. It outlines corrosion fatigue evolution mechanisms and discusses various test methodologies. Six distinct approaches are employed to assess corrosion fatigue life. A three‐stage multiscale corrosion fatigue evolution process involves pitting formation and growth, short crack propagation, and long crack propagation. Advanced fatigue assessment methods like the theory of critical distances (TCD) and the strain energy density (SED) are explored for predicting the corrosion fatigue life for corroded steel wires. A model utilizes an elastoplastic corrosion fatigue damage framework to comprehensively represent the complex interactions. The physics‐data‐driven method has garnered increasing attention due to its requirement of fewer sample data and good robustness. Moreover, the reliability method underscores its pivotal role in guaranteeing the longevity of suspenders and cables in practical settings.

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Section: Loading Conditionsmentioning

confidence: 99%

Corrosion fatigue mechanisms and evaluation methods of high‐strength steel wires: A state‐of‐the‐art review

Jie,

Zhang,

Susmel

et al. 2024

Fatigue Fract Eng Mat Struct

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“…For example, bridge cables/suspenders/hangers, anchor cables of side/protecting slopes, and prestressed members of large-span structures are mostly consisting of these high-strength materials. However, the failure probability of stressed components has been increased day by day due to coupling corrosion, caused by multi-factors such as environment, temperature, and high stress when they are in use [1][2][3][4][5]. Thus, the safety monitoring of these key materials is a very crucial means to prevent accidents in this engineering structure [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Strain-Temperature Cross-Sensitivity of FBG Strain Sensors Embedded Onto Different Substrates

et al. 2022

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The strain-temperature cross-sensitivity problem easily occurs in the engineering strain monitoring of the self-sensing embedded with fiber Bragg grating (FBG) sensors. In this work, a theoretical investigation of the strain-temperature cross-sensitivity has been performed using the temperature reference grating method. To experimentally observe and theoretically verify the problem, the substrate materials, the preloading technique, and the FBG initial central wavelength were taken as main parameters. And a series of sensitivity coefficients calibration tests and temperature compensation tests have been designed and carried out. It was found that when the FBG sensors were embedded on different substrates, their coefficients of the temperature sensitivity were significantly changed. Besides, the larger the coefficients of thermal expansion (CTE) of substrates were, the higher the temperature sensitivity coefficients would be. On the other hand, the effect of the preloading technique and FBG initial wavelength was negligible on both the strain monitoring and temperature compensation. In the case of similar substrates, we did not observe any difference between temperature sensitivity coefficients of the temperature compensation FBG with one free end or two free ends. The curves of the force along with temperature were almost overlapped with minor differences (less than 1%) gained by FBG sensors and pressure sensors, which verified the accuracy of the temperature compensation method. We suggest that this work can provide efficient solutions to the strain-temperature cross-sensitivity for engineering strain monitoring with the self-sensing element embedded with FBG sensors.

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“…Considering the increased usage amount of UHSS, the localized corrosion caused by UHSS may reduce the fatigue performance. Hence, corrosion fatigue crack initiation and propagation could be greatly accelerated, resulting in a significant decline of fatigue life [21][22][23][24][25][26]. Therefore, the corrosion behavior of bridge steel in this environment must be studied, especially the synergy influence of the galvanic corrosion and fatigue behaviors to the welded joints.…”

Section: Introductionmentioning

confidence: 99%

Galvanic Corrosion and Fatigue Behavior of a SM480C Welded Joint Steel in a Sea-Crossing Suspension Bridge

Zhou¹,

Zhang²,

Xu³

et al. 2022

International Journal of Corrosion

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The corrosion tendency and fatigue behavior of a SM480C welded joint in a sea-crossing suspension bridge after twenty-year exposure to a marine environment was investigated in this work. It was found that the corrosion product on the whole surface of the welded joint is loose, with many holes and cracks, which allowing corrosive media enter and reach the surface of the substrate. Localized corrosion occurred in the weld zone (WZ) and the heat-affected zone (HAZ), the maximum depth of localized corrosion in the HAZ reached 1.8 mm, and the maximum local corrosion rate is 0.082 mm/y. By using Bimetallic Conjugation Theory calculations, the galvanic effect of the welded joint was qualified, indicates that HAZ was the most corrosion susceptible area in the welded joint. The galvanic corrosion current on HAZ reached approximately 2 μA, which is much higher than the corrosion of isolated HAZ by about 6.5 times. The corrosion has an obvious influence on the fatigue performance, the elongation of the bridge deck decreases by 40%~70%, and the tensile strength decreases by 4.5%~31.33%. In order to ensure the service safety and avoid premature failure, the average thickness of the corroded bridge deck should not be less than 10 mm under the stress amplitude of 115 MPa.

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Experiment on Corrosion Fatigue Life of Steel Strands under the Coupling Effects of Chloride Environment and Alternating Loads

Cited by 4 publications

References 13 publications

Corrosion fatigue mechanisms and evaluation methods of high‐strength steel wires: A state‐of‐the‐art review

Corrosion fatigue mechanisms and evaluation methods of high‐strength steel wires: A state‐of‐the‐art review

Investigation of Strain-Temperature Cross-Sensitivity of FBG Strain Sensors Embedded Onto Different Substrates

Galvanic Corrosion and Fatigue Behavior of a SM480C Welded Joint Steel in a Sea-Crossing Suspension Bridge

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