Cathodic protection modeling

D. P. Riemer and M. E. Orazem, Modelling Coating Flaws with Non-Linear Polarization Curves for Long Pipelines, in Corrosion and Cathodic Protection Modelling and Simulation, Volume 12 of Advances in Boundary Elements, R. A. Adey, editor, WIT press, Southampton, 2005, 225-259. [Pg.46]

Andres B Peratta, John M W Baynham, and Robert A. Adey. Advances In Cathodic Protection Modelling of Deep Well Casings In Multi-Layered Media. CORROSION 2009, Paper 6555 Atlanta, Georgia. NACE International 2009. [Pg.57]

M. Roche, J. Vittonato and M. Jebara. Cathodic Protection Modelling of Deep Wells Casing by 3D software simulation Comparison with E-Logl and CPET Data . Paper 08273. NACE Corrosion2008. [Pg.57]

In cathodic protection modeling, (102) is the relevant form. Once the unknowns 0 (Q) and (g) on the boundary have been evaluated, the potential at an arbitrary interior point can be calculated... [Pg.33]

Nisancioglu, K., Modelling for Cathodic Protection . In Cathodic Protection Theory and Practice, 2nd International Conference, Stratford upon Avon, June (1989)... [Pg.161]

Adsorption-induced brittle fracture. This model is based on the hypothesis that adsorption of environmental species lowers the interatomic bond strength and the stress required for cleavage. This model of chemical adsorption can explain the fact that a certain alloy is susceptible to specific ions. An important factor in support of this mechanism is the existence of a critical potential below which the SCC does not occur in some systems, and this model underlines the relation between the potential value and the capacity of adsorption of the aggressive ion. It also explains the preventive action of SCC for some systems by cathodic protection. This model may interpret the rupture of plastic materials or glass. It is referred to as the stress-sorption model, and similar mechanisms have been proposed for HE and LME. In this model, the crack should propagate in a continuous way at a rate determined by the arrival of the embrittling species at the crack tip. The model does not explain how the crack maintains a sharp tip in a normally ductile material.156... [Pg.448]

P. O. Gartland and R. Johnsen, COMCAPS—Computer Modelling of Cathodic Protection Systems, Corrosion 85, Paper 319, NACE, Houston, TX (1985). [Pg.160]

Computational modelling of cathodic protection systems for pipelines in multi-layer soil... [Pg.35]

Keywords cathodic protection, correlation model, cylinder pipes, protection current, measurements, desert conditions. [Pg.59]

Keywords cathodic protection, physical scale model, computer simulation, electric signature. [Pg.89]

R. W. Ditchfield, J. N. McGrath and D. J. Tighe-Ford. Theoretical validation of the physical scale modelling of the electrical potential characteristics of marine impressed current cathodic protection. J. Applied Electrochemistry. 1995.25 54-60... [Pg.96]

I. Gurrappa. Physical and Computer Modelling for Ship s Impressed-current Cathodic-protection Systems. [Pg.96]

A. A. Sagues, S. C. Krane, F. J. Presuel-Moreno, Advanced computational model for sacrificial cathodic protection of partially submerged reinforced concrete marine... [Pg.434]

With steady development in the modeling methods and computational techniques, this approach is expected to rule the future of cathodic protection design. Development of models has lead to a widespread increase in the theoretical understanding of the system. In the future it is expected to play wide role in developing new designs without wasting money on field experimental projects. [Pg.631]

M.E. Orazem, J.M. Esteban, K.J. KenneUey, R.M. Degerstedt, Mathematical models for cathodic protection of an underground pipehne with coating holidays Part 1—theoretical development. Corrosion 53 (1997) 264-272. [Pg.635]

R.M. Degerstedt, K.J. KenneUey, M.E. Orazem,J.M. Estehan, Computer modeling aids. Traditional cathodic protection. Design methods for coated pipelines, Mater. Performance 35 (1996) 16—20. [Pg.638]

With intelligent eombinations of these simple models it is possible to make approximate estimations for other geometries. Typieal of the three models dealt with above is that both the anode and the cathode potential are constant over the respective electrode surfaces. Analytical solutions exist also for some other geometries. On the basis of such solutions (and partly on an empirical basis) several formulae for the resistance of the electrolyte volume near the anode - the anode resistance Ra - have been developed. Such formulae for various anode geometries are used in design of cathodic protection systems [10.25-10.34]. [Pg.279]

Gartland PO, Johnsen R. Comcaps - mathematical modelling of cathodic protection systems. Corrosion/84. Paper no. 319. Houston, Texas NACE 1984. [Pg.303]

The most coherent set of comparative data was developed by the SHRP research on repair methods (Gannon et al., 1993). A series of field rehabilitation projects on US bridges was investigated and the data presented in a series of graphs and polynomial eqnations. In the United Kingdom a web-based model for evaluation of structures, selection of repair options and comparative life-cycle costing. The model is available for use at http //projects.bre.co.uk/rebarcorrosioncost/. This includes a comprehensive set of cost tables for galvanic and impressed current cathodic protection,... [Pg.212]

Cirncrete Society (1989) Model Specification for Cathodic Protection of Reinforced Concrete, Technical Report No. 37. [Pg.180]

Control Criteria and Materials Performance Studies for Cathodic Protection of Reinforced Concrete. Demonstrates through mathematical models the feasibility of improved and simplified control criteria for cathodic protection of concrete structures. The models were developed to establish concentration profiles which develop as a result of cathodic protection current, and to study current distributions which result from geometric factors. 260 pages. SHRP-S-670... [Pg.252]

In the previous case, it was a question of a type of bimetallic corrosion without electrical contact between the metals involved. The process initially is difficult to understand it is, however, easy to understand if one considers it as a battery with an external short circuit caused by an electrolyte behaving in the same way. The results of measurements on a model and the action of cathodic protection are described in Ref. 23. [Pg.283]

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