1. Department of Mechanical Engineering
2. Isfahan University of Technology
3. Isfahan 84156-83111
4. Iran
5. Department of Mechanical & Materials Engineering
6. Universiti Kebangsaan Malaysia (UKM)
7. Bangi 43600
8. Malaysia
9. Institute of Structural Mechanics
10. Bauhaus-University Weimar
11. 99423 Weimar
12. Germany