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Research in Engineering Design

, Volume 23, Issue 4, pp 305–328 | Cite as

Multilayer network model for analysis and management of change propagation

  • Michael C. Pasqual
  • Olivier L. de Weck
Original Paper

Abstract

A pervasive problem for engineering change management is the phenomenon of change propagation by which a change to one part or element of a design requires additional changes throughout the product. This paper introduces a multilayer network model integrating three coupled layers, or domains, of product development that contribute to change propagation: namely, the product layer, change layer, and social layer. The model constitutes a holistic, data-driven approach to the analysis and management of change propagation. A baseline repository of tools and metrics is developed for the analysis and management of change propagation using the model. The repository includes a few novel tools and metrics, most notably the Engineer Change Propagation Index (Engineer-CPI) and Propagation Directness (PD), as well as others already existing in the literature. As such, the multilayer network model unifies previous research on change propagation in a comprehensive paradigm. A case study of a large technical program, which managed over 41,000 change requests in 8 years, is employed to demonstrate the model’s practical utility. Most significantly, the case study explores the program’s social layer and discovers a correspondence between the propagation effects of an engineer’s work and factors such as his/her organizational role and the context of his/her assignments. The study also reveals that parent–child propagation often spanned two or more product interfaces, thus confirming the counterintuitive possibility of indirect propagation between nonadjacent product components or subsystems. Finally, the study finds that most changes did not lead to any propagation. Propagation that did occur always stopped after five, and rarely more than four, generations of descendants.

Keywords

Engineering change management Product development Change propagation Multilayer network model Multiple domains 

Abbreviations

CAI

Change Acceptance Index

CPI

Change Propagation Index

CPM

Change Prediction Method

CR

Change request

CRI

Change Reflection Index

DMM

Domain Mapping Matrix

DSM

Design Structure Matrix

ECM

Engineering change management

ESM

Engineering Systems Matrix

IPT

Integrated program team

PAR

Proposal Acceptance Rate

PD

Propagation Directness

PDSM

Propagation Design Structure Matrix

SAP

System Adjustable Parameter

Notes

Acknowledgment

Excerpts and figures from this paper were previously published by the Design Society in: Pasqual, MC, de Weck, OL (2011) Multilayer network model for analysis and management of change propagation. In: Proceedings of the 18th International Conference on Engineering Design, pp 126–138.

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Copyright information

© Springer-Verlag London Limited 2011

Authors and Affiliations

  1. 1.MIT Lincoln LaboratoryLexingtonUSA
  2. 2.Engineering Systems DivisionMassachusetts Institute of TechnologyCambridgeUSA

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