Ogunbajo, K.A., Ugheoke, B.I., Muhammad, I.D. and Onche, E. 2025. Application of Upper Bound Analysis and Taguchi Method In Aluminium Extrusion. ABUAD Journal of Engineering Research and Development (AJERD). 8, 2 (Jul. 2025), 157–169. DOI:https://doi.org/10.53982/ajerd.2025.0802.16-j.