Prediction of single-phase erosion-corrosion in mild steel pipes using artificial neural networks and a deterministic model
- Pennsylvania State Univ., University Park, PA (United States)
Erosion-corrosion is flow-assisted corrosion that can cause wall thinning in fluid piping systems. Several key parameters, such as pH, temperature, flow rate, mass transfer coefficient (which is a function of the geometry and pipe configuration), and materials determine the rate at which damage develops. In this study, the authors generated an experimental data base from the open literature which they used to train and to test an Artificial Neural Network (ANN). They also developed a deterministic model which they used to make predictions. The predictions from the deterministic model, and from the ANN were compared to the experimental data collected and the results are reviewed and discussed. The artificial Neural Network was designed to learn from about 60% of the experimental data collected. The data contained as variables experimental single phase erosion-corrosion rates (mm/yr) (for several configurations of mild steel piping under various environmental and mechanical conditions including: pH, temperature, flow rate, mass transfer coefficient, and oxygen concentration). However, most of the data collected contains no information on the oxygen concentration in the solution, the hydrodynamic numbers characterizing the geometry, or flow velocity. Instead of the hydrodynamic characteristics, the mass transfer coefficient was given (the mass transfer coefficient will account for geometry and flow velocity effects). The experimental information usually does not contain detailed information on the material composition, or on the chemical composition of the solution. Accordingly, the number of variables used to train the ANN was limited.
- DOE Contract Number:
- FG03-84ER45164
- OSTI ID:
- 128719
- Report Number(s):
- CONF-950304-; TRN: IM9550%%104
- Resource Relation:
- Conference: Corrosion `95: National Association of Corrosion Engineers (NACE) international annual conference and corrosion show, Orlando, FL (United States), 26-31 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Corrosion/95 conference papers; PB: 5788 p.
- Country of Publication:
- United States
- Language:
- English
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