1. a
Department of Mechanical Engineering , High Institute of Technological Studies
, Campus Universitaire Sidi Ahmed Zarrouk,
2112
,
Gafsa
,
Tunisia
2. b
Faculty of Sciences , University of Gafsa
,
Gafsa
,
Tunisia
3. c
Department of Mechanical Engineering , Salman bin Abdel-Aziz University
,
Alkahrj
,
Saudi Arabia