1. Department of Machine Manufacturing Technology “Gheorghe Asachi” Technical University of Iasi Blvd. Mangeron, No. 59A Iasi 700050 Romania
2. Department of Materials Science “Gheorghe Asachi” Technical University of Iasi Blvd. Mangeron 41 Iasi Romania
3. Faculty of Engineering “Lucian Blaga” University of Sibiu Emil Cioran Str., No. 4 Sibiu Romania
4. Academy of Romanian Scientists Str. Ilfov, Nr. 3, Sector 5 Bucharest Romania