1. University of Johannesburg,Department of Mechanical and Industrial Engineering Tech,Johannesburg,South Africa
2. Oregon State University,College of Engineering,Corvallis,Oregon,USA
3. University of Johannesburg,Department of Mechanical and Industrial Engineering,South Africa
4. Federal University of Petroleum Resources Effurun,Department of Mechanical Engineering,Delta,Nigeria
5. Memorial University of Newfoundland,Faculty of Engineering and Applied Sc,St. John’s NL,Canada