Rodríguez Yáñez, Alicia B.

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    Process windows considering two conflicting criteria: the injection molding case
    (2012) Rodríguez Yáñez, Alicia B.; Cabrera Ríos, Mauricio; College of Engineering; Suárez, O. Marcelo; Cesaní, Viviana; Castro, José M.; Department of Industrial Engineering; Ortiz Rodríguez, Rosario de los A.
    In this work, multiple criteria in conflict are considered simultaneously to determine a process window for injection molding (IM). The best compromises between criteria are identified through the direct application of the concept of Pareto-dominance in multiple criteria optimization. With previous information, the translation of the solutions to a graphical representation is carried out for build multiple criteria process window for IM process. This representation will be easier to handle and understand for molders in manufacturing plants. The aim with this work is to provide a formal and realistic strategy to set processing conditions in IM operations. In order to keep the main ideas manageable, the development of the strategy is constrained to two controllable variables in computer simulated parts. As an extension of the method three criteria are incorporated to assess the feasibility. The method proposed here in comparison with other optimization technique such as DEA have a better performance, not required hard programming and computational effort. With the direct application of the dominance and Pareto-optimal concept we have the certain of the correct efficient solutions. Based on the results this strategy is feasible, effective and efficient to find the Pareto-efficient frontier and on prescribing competitive processing conditions in IM operations.