Corrosion Assessment and Management

Paik, Jeom Kee; Thayamballi, Anil Kumar

doi:10.1017/cbo9780511546082.012

Cited by 1 publication

(1 citation statement)

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“…In the context of ship and offshore structures, the initiation and progression of marine corrosion may be related to various types of mechanisms, such as galvanic corrosion, integranular corrosion, crevice corrosion and erosion corrosion [1]. Depending on the age of the structure, corrosion protection system and the environmental factors, the corrosion process can be dominated by one or more mechanisms [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Mechano-electrochemical modelling of corroded steel structures

Wang

Wharton

Shenoi

2016

Engineering Structures

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A numerical methodology is established to study the mechanoelectrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechano-electrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the corrosion damage. ABSTRACTA numerical methodology is established to study the mechano-electrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechanoelectrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the mechano-chemical corrosion damage.

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