Resources
Our Published Papers and Presentations
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Predicting Corrosion in Military Aircraft
Aircraft typically comprise multiple materials, each exhibiting unique electrochemical properties. When they are exposed to harsh marine and global environments, the difference in material properties can lead to severe galvanic corrosion, causing safety risks, costly repairs, and reduced readiness.
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Predicting the Impact of Metallic Coating and Paint Degradation on Airframe Corrosion
The present approach for considering galvanic incompatibilities is simplistic and static. It is simplistic in that the only thing it takes into account is the galvanic potential difference between two adjacent materials. An estimate of the galvanic corrosion severity is usually based on some form of galvanic potential table, as in MIL-STD-889. However, in mixed…
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Ready to Roll… and Repair! Dalistick® Systems for F-35 Sustainment from Corrdesa
For years, the solution to repairing aerospace coatings has required a lengthy grounding of aircraft in order to perform the repairs. No one wants to dismantle an in-demand aircraft to repair it for corrosion – and now we don’t have to.
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MIL-STD-889D
This updated standard defines and classifies the galvanic compatibility of electrically conductive materials and establishes requirements for protecting coupled materials against corrosion with attention directed to the anodic member of the couple.
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Corrosion Modeling using Multiphysics Computational Fluid Dynamics – From Ideal to Real Conditions – NAFEMS CAASE20
How can we correctly simulate the evolution of corrosion damage in test systems, including different surface preparations, coatings and test environments? We implement fully 3D time-dependent Multiphysics CFD simulations on a multi-material structure along with the appropriate boundary conditions (polarization behavior of the materials involved) to predict an accurate variable film thickness distribution and calculate…
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Numerical Prediction of Electrochemical Machining Processes Using Multiphysics Computational Tools – NAFEMS CAASE20
Electrochemical Machining (ECM) is essentially a high-speed corrosion process. It harnesses corrosion to machine very hard metals, thin sections and complex shapes, without the tool ever touching the workpiece. The problem is that the shape does not directly determine the dimensions of the final product, which makes it hard to design the tool for accurate production.
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Microscale Modeling of Metal Filled Coating for Corrosion Protection – NAFEMS CAASE20
Metal-filled coatings/primers/seals containing anodic materials are engineered to provide sacrificial protection to the underlying metal by the same mechanism as Zn, Cd, etc. The substrate is protected by an alloy pigment in the polymer coating that is electrochemically more active (anodic) than the material to be protected.
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Using Electrochemical Simulation to both Optimize Alloy Electroplating and Predict the Consequent Impact on Product Corrosion Resistance – NAFEMS CAASE20
For decades the aerospace industry has employed hexavalent chrome-converted cadmium coatings, primarily for sacrificial corrosion protection of high-strength steel components.
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Corrosion Chronicles – NACE
Engineers have long known that the old methods of corrosion prediction (e.g. galvanic tables) and testing (ASTM B117) are inadequate and inaccurate.
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Using CCM+ to model electrochemical processes and guide material choice in aerospace and automotive systems
The Simcenter conference was very interesting, providing a great opportunity to learn more about the present software tools and also the trends in future development.