1. Laboratory of Mechanics, Materials, and Photonics, University of Ngaoundere, Ngaoundere, Cameroon
2. Group of Mechanics, Materials and Acoustics, Faculty of Science and School of Chemical Engineering and Mineral Industries (EGCIM), University of Ngaoundere, Ngaoundere, Cameroon
3. Industrial Systems and Environmental Engineering research Unit (UR-ISIE), Fotso Victor Institute of Technology of Bandjoun, University of Dschang, Bandjoun, Cameroon
4. Laboratory of Civil and Mechanic Engineering, National Advanced School of Engineering, University of Yaounde I, Yaounde, Cameroon