Effect of long periods of corrosion on the fatigue lifetime of offshore mooring chain steel

Qvale, Paul; Nordhagen, Håkon Ottar; Ås, Sigmund Kyrre; Skallerud, Bjørn

doi:10.1016/j.marstruc.2022.103236

Cited by 10 publications

(2 citation statements)

References 29 publications

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“…Model numerik tersebut berdasar pada Peridinamika (PD) yang menggabungkan mekanik dan difusi material sebagai dampak kelelahan terhadap lingkungan. Ovale P. et al, (2022) mempelajari spesimen rantai baja grade R4 pada media saltwater dan air fatigue yang mengalami fase korosi bolak-balik untuk mereplikasi variasi beban musiman pada rantai yang beroperasi. Korosi yang dipercepat oleh polarisasi anodik terbukti tidak cocok untuk mereplikasi korosi alami yang berasal dari retak lelah.…”

Section: Pendahuluanunclassified

Pengaruh Suhu Terhadap Laju Korosi Komponen Logam Pada Bagian Fuselage Pesawat Md-80

Utami

Rochmadi

2022

teknika

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Pesawat merupakan moda transportasi efektif dan efisien bagi Indonesia sebagai Negara Kepulauan. Keselamatan penerbangan berupa kelayakan pesawat menjadi salah satu faktor utama. Komponen logam pada bagian fuselage menjadi perhatian utama karena berhubungan langsung dengan lingkungan. Faktor lingkungan, seperti suhu dapat mempengaruhi laju korosi komponen logam yang pada akhirnya dapat mempengaruhi kelayakan pesawat. Variasi suhu terbagi menjadi 4, yaitu , , , dan dengan kondisi lingkungan pH tetap, yaitu 3,4 dalam rentang waktu 12 jam. Kehilangan berat komponen logam terhadap suhu lingkungan menjadi perhatian. Laju korosi komponen logam pada bagian fuselage pesawat MD-80 terhadap variasi suhu dalam rentang waktu 12 jam menunjukkan nilai laju korosi yang tidak signifikan. Hal ini mungkin disebabkan karena dalam rentang waktu tersebut proses korosi masih berjalan, namun namun tidak menutup kemungkinan sudah terjadi korosi.

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Section: Pendahuluanunclassified

Pengaruh Suhu Terhadap Laju Korosi Komponen Logam Pada Bagian Fuselage Pesawat Md-80

Utami

Rochmadi

2022

teknika

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“…Generally, in the offshore area, the corrosion behavior of bridge deck steels usually exhibits obvious regional environment-dependent characteristics [1][2][3][4], which are affected by environmental factors such as the ocean water, oxid film [5], high sedimentation content of chloride ions [6], temperature, precipitation of secondary phases, bottom sediments, and external load stress. Highstrength bridge steels are frequently subjected to severe corrosion and high fatigue loading during service [7][8][9][10][11]. The corrosion pits and defects caused by initial corrosion can act as crack nucleation sites and exert a negative effect on the subsequent mechanical and fatigue properties.…”

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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Application of impressed current cathodic protection on chain structure: An experimental study combined with COMSOL simulation

Yang,

Zhong,

Xing

et al. 2024

Electrochimica Acta

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Effect of long periods of corrosion on the fatigue lifetime of offshore mooring chain steel

Cited by 10 publications

References 29 publications

Pengaruh Suhu Terhadap Laju Korosi Komponen Logam Pada Bagian Fuselage Pesawat Md-80

Pengaruh Suhu Terhadap Laju Korosi Komponen Logam Pada Bagian Fuselage Pesawat Md-80

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

Application of impressed current cathodic protection on chain structure: An experimental study combined with COMSOL simulation

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