1. Department of Manufacturing Processes and Production Engineering, Rzeszow University of Technology, al. Powst. Warszawy 8, 35-959 Rzeszów, Poland
2. College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
3. Department of Aerospace Engineering, Ethiopian Space Science and Technology Institute, Addis Ababa, P.O. Box 33679, Ethiopia
4. Department of Mechanical Engineering, University of Gondar, Gondar P.O. Box 196, Ethiopia
5. Department of Mechanical and Structural Engineering, University of Stavanger, N-4036 Stavanger, Norway