Mwema, F. M.

Department of Mechanical Engineering Science, University of Johannesburg, South Africa Department of Mechanical Engineering, Dedan Kimathi University of Technology, Nyeri, Kenya

Akinlabi, E. T.

Department of Mechanical Engineering Science, University of Johannesburg, South Africa

Oladijo, O. P.

Department of Mechanical Engineering Science, University of Johannesburg, South Africa Department of Chemical, Materials and Metallurgical Engineering, Botswana International University of Science & Technology, Palapye, Botswana

Baruwa, A. D.

Department of Mechanical Engineering Science, University of Johannesburg, South Africa