A Network Approach to Define Modularity of Product Components

1 Corresponding author: [email protected] Tel: ++33 (0)1 60 72 45 36. Fax: ++33 (0)1 60 74 61 79. ABSTRACT We consider complex products as a network of components that share technical interfaces in order to function as a whole. Building upon previous work in graph theory and social network analysis, we define three measures of component modularity that consider how components may share direct interfaces with other adjacent components, how design interfaces may propagate to all other components in the product, and how components may act as “bridges” between other components. We calculate and interpret all three measures of component modularity by studying the actual product architecture of a large commercial aircraft engine. We illustrate how to use these measures to test their impact on component redesign. Directions for future work are discussed.