Multicriteria capability indices

Introduction of modern quality management systems in branches as well as between several branches, especially in the metalworking industry, leads to customer–supplier agreements with fixed minimal values of capability indices for machines, processes and equipment. But, problems can be observed in the case that there is more than one quality characteristic or if the probability distribution is not normal and in definitions of traditional capability indices functionality of produced workpieces is not considered. New possibilities for evaluation of complex characteristic patterns, definitions of which take into account the multicriteria and statistical properties of the evaluation problem, are shown in this paper.