1. Department of Industrial Engineering, Alma Mater Studiorum University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy
2. Department of Mechanics, Materials Science and Biomedical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, PL 50-370 Wroclaw, Poland
3. IWT, Department Physical Analysis, Leibniz Institute for Materials Engineering, 28359 Bremen, Germany