1. Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany
2. Institute of Manufacturing Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 13, 91058 Erlangen, Germany
3. Institute for Machine Tools and Factory Management, Technical University Berlin, Pascalstraße 8-9, 10587 Berlin, Germany