Simulation Based Corrosion Management

project coordinator
EADS Corporate Research Centre, Germany partners Airbus Deutschland GmbH, Germany; EADS Corporate Research Centre, France; Computational Mechanics International Limited, Great Britain; Swiss Federal Laboratories for Materials Testing and Research, Switzerland; University of Bourgogne, France; University of Erlangen, Germany; Vrije Universiteit Brussel, Belgium; Sheffi eld Hallam University, Great Britain; University of Watras, Greece; Politechnika Warszawska, Poland

Aim of project
SICOM will develop a numerical microscale model to simulate localized corrosion of Al-alloys with regard to microstructure and the micro-electrochemical condition. It will provide:

Corrosion rates of Al-alloys in the mesoscale of occluded cells by means of numerical calculation as a function of physical and geometrical factors for given macro-environments;

A numerical model for prediction of galvanic corrosion behavior will be developed and upscaled for application to structural elements of aircraft. The infl uence of surface treatment on the modeling results will be included with regard to inhibitor release from protection systems;

Role of clad layer influence and oxide degrading effects. A decision support tool will be established for exploitation and implementation of the project results in scientific and technical applications.

Expected results
The scientific and technological results of SICOM are:
Definition of modeling parameters that represent corrosion condition and in-service experience of aircraft;

Development of a numerical micro-scale model to simulate localized corrosion of Al-alloys with regard to micro-structure and the micro-electrochemical condition;

Determine the corrosion rate of Al-alloys in the meso-scale of occluded cells by means of numerical calculation as a function of physical and geometrical factor for given macroenvironment;

Development of a basic numerical model for prediction of galvanic corrosion behavior and upscaling it for application to structural elements of aircraft;

Analysis and integration of the impact of surface treatment of the modeling results with regard to inhibition release effect on corrosion rate, clad layer influence and oxide degrading effects;

Development of a decision tool to link different models of different scales and model Validation.