1. Professor, Dept. of Mechanical Engineering, Politecnico di Milano, via la Masa, 34, 20156 Milano, Italy. E-mail: alfredo.cigada@polimi.it
2. Postdoctoral Researcher, Dept. of Mechanical Engineering, Politecnico di Milano, via la Masa, 34, 20156 Milano, Italy. E-mail: alessandro.caprioli@polimi.it
3. Ph.D. Student, Dept. of Mechanical Engineering, Politecnico di Milano, via la Masa, 34, 20156 Milano, Italy. E-mail: matteo.redaelli@polimi.it
4. Assistant Professor, Dept. of Mechanical Engineering, Politecnico di Milano, via la Masa, 34, 20156 Milano, Italy. E-mail: Marcello.vanali@polimi.it