Optimisation of core tube life using Taguchi experimental design methodology

This is the last of three papers in a series representing a research project being carried out within the Engineeringand Business School faculties at the University of Portsmouth. It presents the second case study, intended to validate and refine the conceptual methodology explained in the September issue of the Quality World Technical Supplement¹. The aim is to assist engineers with limited statistical knowledge in applying Taguchi methods in a methodical manner. The methodology validation was focused on three phases: problem classification, choice of orthogonal array design and finally statistical analysis and interpretation of results from the analysis. The case study proves that the methodology can be easily understood by the engineering community and therefore should lead to its wider use.