Computation of material properties and modeling of material geometry based on CT-scans.


E. Glatt, J. Becker, S. Rief  and A. Wiegmann 
Fraunhofer ITWM, Kaiserslautern, Germany


Abstract 

CT-scans in combination with recent hardware and software developments establish new possibilities
for the engineering of materials with the computer. Using CT-scans one can calculate material
properties via geometrical analyses and numerical simulations. Furthermore, CT-scans can be the basis
for the development of geometry models for a material. Using a realization of such a model one again
can simulate the relevant material properties, what allows for the optimization of the geometry. In a
next step one tries to produce the new material and a CT-scan can now help to proof if the optimal
geometry was achieved.
This ansatz is applied to a multitude of projects at the Fraunhofer ITWM. The main applications are
the design of filter media, the optimization of PEM fuel cells and the simulation of felts for the
dewatering of paper. For these applications we calculate pore size distributions, one and two phase
flows, the efficiency and life-time of filters, the electrical and thermal conductivity, and the effective
elastic properties. To assure the reusability of the knowledge, which was obtained in many public and
industrial projects, all the options for the computer aided engineering are included in the GeoDict
software. This software is also usable for partners of the ITWM (see www.geodict.com).

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Last modified: Thu Oct 04 11:45:15 W. Europe Standard 2010