1. Department of Machine Manufacturing Technology “Gheorghe Asachi” Technical University of Iasi Blvd. Mangeron, No. 59A Iasi 700050 Romania
2. Mechanical Engineering Faculty “Gheorghe Asachi” Technical University of Iasi Blvd. Mangeron, No. 59A Iasi 700050 Romania
3. Department of Manufacturing Engineering “Dunarea de Jos” University of Galati str. Domneasca, No. 111 Galati 800201 Romania