Design Divergence Using the Morphological Chart

This paper investigates the effectiveness of the morphological chart method in design divergence. The literature presents the morphological chart as an engineering design method that does not particularly aim novelty, but instead gathers possible means for fulfilling the independently decomposed sub-functions of a product. On the other hand, implementations of this method in design education has shown that this method offers the possibility of design exploration for groups of interrelated sub-functions. Accordingly, this widens the solution space and encourages designers to think on the consequences of their design decisions while generating ideas, hence allowing situated design divergence to take place. The paper presents the findings of a review carried out on twelve morphological charts completed in groups, containing a total of 686 sub-solution sketches made for a pool of 21 sub-functions. The charts were reviewed as a whole in terms of group performance in idea generation for a decomposed design problem. Then the sub-solution ideas were grouped according to sub-functions and were reviewed in terms of idea content. It was seen that a background preparation with product trials, 3D exploration of product configuration, and experience in using the morphological chart method, affected the number of cells that the participants completed. Besides, several factors were found to influence the ways in which participants filled in the morphological charts. The reviews revealed eleven factors affecting design divergence using the morphological chart method, grouping under the headings of: preparations, group dynamics, boundaries of sub-functions, and interrelations of product components. In addition, thirteen strategies were identified that participants followed for idea generation using the morphological chart method, grouping under the headings of: beginning idea generation, ensuring effective idea generation, exploring ideas, diversifying ideas and representing ideas.