C. I. Nwoye

Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria

P. C. Nwosu

Department of Mechanical Engineering, Federal Polytechnic, Owerri, Nigeria

P. Okonji

Department of Welding and Fabrication Engineering, Delta State Polytechnic, Asaba, Nigeria

E. C. Chinwuko

Department of Industrial and Production Engineering, Nnamdi Azikiwe University, Awka, Nigeria