C. Nwoye

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

E. C. Chinwuko

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

P. C. Nwosu

Department of Mechanical Engineering, Federal Polytechnic, Nekede, Nigeria

N. E. Idenyi

Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria