1. Fraunhofer Institute for Non-Destructive Testing IZFP, 66123 Saarbrücken, Germany
2. Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
3. Institute of Materials Science, TU Dresden, 01062 Dresden, Germany
4. Chair for Lightweight Systems, Saarland University, 66123 Saarbrücken, Germany