In: Optimization in Polymer Processing ISBN # 9781611228182 Editor: A.GasparCunha, J. A.Covas, pp.133©2011 Nova Science Publishers, Inc.                   * Institute for Polymers and Composites/I3N, University of Minho, Campus de Azurém, 4800058 Guimarães, Portugal ** Department of Informatics Engineering, University of Coimbra, Pólo II, Pinhal de Marrocos, 3030290 Coimbra, Portugal and CEGIST, Instituto Superior Técnico, Technical University of Lisbon, 1049101 Lisboa, Portugal   Multidisciplinary design optimization, Engineering design, MultiObjective Optimization, Evolutionary Algorithms !" Real engineering design and optimization problems are complex, multidisciplinary and difficult to manage within reasonable timings; in some cases, they can, at least to some extent, be mathematically described by sophisticated computational tools, which generally require significant resources. The momentous advances in some scientific and technological subjects (e.g., computational fluid dynamics, structural mechanics), coupled to the development of highly performing computing techniques (e.g., parallel