1. Lecturer, Dept. of Mechanical Engineering, Tamale Technical Univ., Box 3 E/R Tamale, Ghana; Researcher, Dept. of Materials Science and Engineering, African Univ. of Science and Technology, Km 10 Airport Rd., P.M.B 681, Abuja, Nigeria (corresponding author).
2. Lecturer, Dept. of Materials Engineering, Kwame Nkrumah Univ. of Science and Technology, Kumasi, Ghana; Researcher, Dept. of Materials Science and Engineering, African Univ. of Science and Technology, Km 10 Airport Rd., P.M.B 681, Abuja, Nigeria.
3. Lecturer, Dept. of Mechanical Engineering, Ashesi Univ. College, Accra, Ghana; Researcher, Dept. of Materials Science and Engineering, African Univ. of Science and Technology, Km 10 Airport Rd., P.M.B 681, Abuja, Nigeria.
4. Associate Professor, Dept. of Civil Engineering, Nile Univ. of Nigeria, Plot 681, Cadastral Zone, Airport Road Bypass, Abuja, Nigeria; Senior Lecturer, Dept. of Agricultural and Environmental Resources Engineering, Univ. of Maiduguri, Maiduguri, Nigeria.