Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mechano-electrochemical modelling of corroded steel structures
Highlights Focus on corroded steel structure subjected to internal and external stresses. Establish finite element method for mechanoelectrochemical evaluation. Examine the interactions between elastic and plastic performance on corrosion. Identify hot spots of enhanced corrosion and quantify increased corrosion rate.
Abstract A 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 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.
Mechano-electrochemical modelling of corroded steel structures
Highlights Focus on corroded steel structure subjected to internal and external stresses. Establish finite element method for mechanoelectrochemical evaluation. Examine the interactions between elastic and plastic performance on corrosion. Identify hot spots of enhanced corrosion and quantify increased corrosion rate.
Abstract A 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 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.
Mechano-electrochemical modelling of corroded steel structures
Wang, Y. (Autor:in) / Wharton, J.A. (Autor:in) / Shenoi, R.A. (Autor:in)
Engineering Structures ; 128 ; 1-14
12.09.2016
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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