1. Department of Mechanical and Industrial Engineering NOVA School of Science and Technology UNIDEMI NOVA University Lisbon Caparica 2829-516 Portugal
2. Departamento de Engenharia Mecânica e Industrial Faculdade de Ciências e Tecnologia Universidade Nova de Lisboa Caparica 2829-516 Portugal
3. Helmholtz-Zentrum Geesthacht Institute of Materials Research Max-Planck-Str. 1 Geesthacht 21502 Germany