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Keywords: modeling
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Proceedings Papers

.... Depending on the solid concentrations and equipment geometry, there are different kinds of wear that can occur, such as impact or erosion and abrasion. Understanding the types of wear or damage mechanisms will aid in selecting and/or developing appropriate models to predict wear rate. In this work, we...
Proceedings Papers

... and interfacial corrosion behavior of the undamaged materials. Water uptake derived from EIS modeling confirmed that all four viscoelastic materials had higher water permeability at higher temperature; however, peel adhesion test revealed lower adhesion on some materials after 100 days immersion at lower test...
Proceedings Papers

... differences can exist between bulk and surface chemistries, leading to inaccurate representation of the corrosion phenomena. This issue requires a better understanding of the surface speciation. Given the fact that directly measuring surface speciation is a very challenging task, corrosion models must...
Proceedings Papers

...The model then calculates the one-dimensional (1D) slurry density distribution and spatial distribution of particle size in the vertical direction (i.e. vertical profiles). The 1D slurry density and spatial particle size distributions are predicted by a method described by Huard et al. 17...
Proceedings Papers

.... Therefore, they are significant when determining if mass transfer is controlling the erosion-corrosion process. To begin building a machine learning/multi-label SVM model, an original dataset was formed by calculating all of these parameters for erosion-corrosion tests performed previously by the authors...
Proceedings Papers

...Model 1 was then optimized to assess likelihood of HTHA damage for in-service equipment by fitting it to the API RP 941 incident data and select laboratory data already in API RP 941. Constants for the following material classes have been determined: Carbon steel including base metal, PWHT, and non...
Proceedings Papers

... an analytical modeling approach that projects initial occurrence and subsequent progression rate of wire and strand fractures and tendon failures, given statistics that characterize wire corrosion rate. The present study builds upon this model by considering and incorporating, first, fractures/failures arising...
Proceedings Papers

... determinations, and has potential for rapid evaluation. (1) D G = J O * T/C A Abstract Oxygen diffusivity is a key parameter in modeling corrosion rate of steel in concrete. Measuring diffusivity can be a complicated and slow process, in conditions or geometries not always representative...
Proceedings Papers

...Abstract Abrasion-corrosion wear rates in horizontal pipeline slurry flow were modelled using novel semi-empirical and numerical approaches. The numerical approach, computational fluid dynamic (CFD) was only used to model abrasive wear. The abrasive wear model that came with the CFD software...
Proceedings Papers

...Abstract The following paper describes a model designed to estimate corrosion-related metal loss and loss patterns on structures exposed in a marine environment. In particular, the model addresses corrosion of coated carbon steel structures subject to immersion conditions. Critically, it offers...
Proceedings Papers

...Finally, the model output is coupled with a cost analysis to calculate the Net Present Value for the future service life of the structure. This calculation allows the determination of the optimal intervention plan for the entire structure by subdividing it into specific representative exposure...
Proceedings Papers

... lights on the mechanisms and key factors governing TLC in CO2 environment. A few models have been proposed to predict CO2 Top of the Line Corrosion 6 - 14 . The prediction model previously developed in authors’ organization is capable of predicting CO2...
Proceedings Papers

...Abstract A quantitative model to forecast corrosion damage in submerged concrete in marine environments is presented. The model incorporates Potential Dependent Threshold (PDT) features and determines the damage function for affected structures. The model has been validated via comparison...
Proceedings Papers

..., and chemical composition of the coatings. The growth or movement of an interface between phases e.g. the coating/substrate interface can be modeled according to Equation 3 5 : (3) x = 2 ξ Dt Where ξ is the normalized interface position parameter, a unit-less number. 5 After...