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An Integrated Assessment of Manufacturing Flexibility

Manufacturing systems have to adapt quickly to changes in turbulent markets. Main performance figures of merit remain cost, quality and delivery. Reduced costs and high quality are main objectives, while delivery is determined by demand in widely spread justin-time production systems. However, flexibility is becoming an essential factor to evaluate the capability of systems to face changing conditions in a short time under uncertainty, minimising impact in cost or quality. Product innovation, supply chain and industrial globalisation increase the outstanding role of assembly systems. A general new definition of flexibility is introduced, focused on quantitative evaluation and decision-making. A comprehensive taxonomy of flexibility for semiautomatic assembly systems is analysed. Finally, some ratios ordinarily used in industrial plants are applied to quantify the operational flexibility of the system.