from the conferences organized by TANGER Ltd.
This paper presents a way to assess processes where more quality characteristics are observed. The method used concerns multivariate capability indices supported by graphical methods. The emphasis is placed on thorough testing of conditions that validate such procedure. The methodology is illustrated on metallurgical data related to a casting which is assessed by two quality characteristics – ultimate tensile strength (X1 in pascals) and yield strength (X2 in pascals).
Keywords: Metallurgy, capability, normality, homogenity, outliers, centralization, process stability.© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.