Experimental assessment of the fatigue strength of corroded bridge wires using non-contact mapping techniques

Miyachi, Kazuhiro; Chryssanthopoulos, Marios K.; Nakamura, Shingo

doi:10.1016/j.corsci.2020.109047

Cited by 22 publications

(3 citation statements)

References 23 publications

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“…This modified formula notably improves the precision in predicting the fatigue life of steel wire affected by corrosion pits. The S-N curves of the mean line for uncorroded and corroded wires are fitted as the following 43 :…”

Section: Stress Methodsmentioning

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: Stress Methodsmentioning

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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“…The crosssection of the test object's corroded portion 101 times at 1 mm pitch along the length of the 100 mm length of the test object was analyzed. Next, using the corrosion wire surface measurement method proposed in [14], the area loss rate and the change in corrosion pit depth were calculated for each cross-section from the optimized Scan data. Furthermore, it should be noted that the wire used in this study has a zinc galvanizing thickness of approximately 50 m (0.05 mm).…”

Section: Analysis Methodsmentioning

confidence: 99%

Correlation between corrosion level and fatigue strength of high-strength galvanized steel wires used for suspension bridge cables

Miyachi

Saimoto

Oki

2023

BRS

Self Cite

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This study investigated the relationship between “rust color distribution ratio,” “corrosion surface shape,” and “fatigue strength” of high-strength galvanized steel wires used in cable supported bridges. The study utilized a digital image color analysis system to classify the rust color distribution rate and categorize corrosion levels based on the distribution ratio. The relationship between cross-sectional loss rate and corrosion depth tendency was visually and quantitatively comprehended from the categorized corrosion levels. The study found that fatigue and tensile strengths of the specimens from the corrosion levels set in this study were equivalent to or higher than those of new wires. However, the possibility of variations due to the small number of specimens or insufficient corrosion progress cannot be ruled out.

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“…Many bridges have entered the maintenance phase, and the detection and inspection of the internal corrosion of suspenders have received increasing attention in recent years [36]. The development and improvement of techniques such as self-leakage magnetism and non-contact mapping also provide effective means for addressing such issues [37][38][39].…”

Section: Of 20mentioning

confidence: 99%

Temporal and Spatial Variation Study on Corrosion of High-Strength Steel Wires in the Suspender of CFST Arch Bridge

Deng,

Deng

2024

Coatings

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The corrosion and degradation behavior of high-strength steel wires during service directly affect the safety and usability of suspenders in steel pipe concrete arch bridges. In this study, three different types of specimens were fabricated using steel wires extracted from the suspenders of an 11-year-old in-service arch bridge and subjected to accelerated corrosion tests with acetic acid. Considering the differential diffusion processes of corrosion factors caused by varying degrees of damage to the suspender sheath, the spatial corrosion variability of steel wires at different positions within the suspender cross-section was investigated. Experimental results indicated a two-stage characteristic in the corrosion process of individual galvanized steel wire samples. In the first corrosion stage, the microstructure on the corroded steel wire surface evolved from a dense crystalline structure to a porous one. In the second corrosion stage, corrosion products accumulate on the steel wire substrate, subsequently further aggregating into sheet-like structures. The maximum pitting factor of individual steel wire samples from a specific area could be described by a Type I extreme value distribution. In the time-dependent model that was established, the location parameter and scale parameter exhibited an exponential decrease during the first corrosion stage and a linear decrease during the second corrosion stage. In the absence of sheath protection, the coefficient of variation in corrosion among adjacent steel wires in the suspender followed a normal distribution. The spatial corrosion variability of the wires inside the suspender is significantly influenced by the shape of the suspender sheath damage. As the corrosion time increased, the overall discrepancy in corrosion levels among different layers of wires diminished.

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Experimental assessment of the fatigue strength of corroded bridge wires using non-contact mapping techniques

Cited by 22 publications

References 23 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

Correlation between corrosion level and fatigue strength of high-strength galvanized steel wires used for suspension bridge cables

Temporal and Spatial Variation Study on Corrosion of High-Strength Steel Wires in the Suspender of CFST Arch Bridge

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