IDC-SAC simulation

IDC-SAC stands for Instationary Diffusion & Corrosion Simulator for Advanced Composites and is highly specialistic multiphysics software for integrated diffusion, corrosion and mechanical retention analysis of polymer based coating, laminate and composite materials.

Chemical-Physical Approach

The core of the software is based on recognition and systematic calculation of all diffusion, corrosion and forthcoming mechanical modes in experimental or in industrial conditions. The use of chemical potentials to describe the drive for mass diffusion simultaneously to chemical activity (chemistry) driven accumulation at interfaces - and forthcoming chemical degradation and mechanical retention - is a unique feature and vital for solving many interfacial related material issues with a combined physical and chemical origin.

The (swelling) thermodynamics used are merely based on lattice based models of Flory - Huggins (for binary and multicomponent mixtures in ambient conditions) and Sanchez - Lacombe (for supercritical and more complex gas and process conditions).

The use of embedded 3D multilayer mathematics allows rigorous overall material service life assessments. One can use IDC-SAC supplementary to other specialistic software for mechanics and fluid dynamics.

Industrial examples are: prediction of Akali initiated corrosion of fibre sizings and subsequent loss of interfacial strength, blistering due to Supercritical carbon dioxide(s - CO2) accumulating at a filler - matrix interface, determination of the effect of mechanical stress in combination with severe temperature variations, etc.

Mathematics

The solving of the partial differential equations of mechanically oriented problems in complex shapes or multiple (more than three) layers is solved using finite element methodology. For basic shapes and a limited amount of subsequent material layers the software uses the finite difference method,.

Development

IDC-SAC is still under development by Composite Agency, an independent Dutch engineering agency. Although a production version of the software is already working and was demonstrated on JEC Composites 2008, currently IDC-SAC is not available with an end-user interface. The user friendly program interface is currently being worked on in Amsterdam and is expected to be finalized in February 2011.

nl:Idc-sac simulation