1. Laboratory of Mechanic (LM), Doctoral Training Unit in Engineering Sciences (UFD-SI), University of Douala, Douala, Cameroon
2. Department of Mechanical Engineering, ENSET, University of Douala, Douala, Cameroon
3. National High School Polytechnic of Douala, Laboratory of Research in Energy, Material, Modeling and Methods, University of Douala, Douala, Cameroon