1. Electrolytic Corrosion DECHEMA-Forschungsinstitut Theodor-Heuss Allee 25 60486 Frankfurt am Main Germany
2. Chair of Composites and Material Compounds Chemnitz University of Technology Erfenschlager Straße 73 09125 Chemnitz Germany
3. Fraunhofer IZFP Fraunhofer Institute for Nondestructive Testing IZFP Campus E3 1 66123 Saarbrücken Germany