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Requirement-Definition-Confirmation Modeling Approach for Identifying Uncertainties in Product Design Processes

[+] Author Affiliations
Toshihiko Nakazawa, Hiroshi Masuda

University of Tokyo, Tokyo, Japan

Paper No. DETC2006-99044, pp. 3-12; 10 pages
  • ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 4a: 18th International Conference on Design Theory and Methodology
  • Philadelphia, Pennsylvania, USA, September 10–13, 2006
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4258-4 | eISBN: 0-7918-3784-X
  • Copyright © 2006 by ASME


Product design consists of multiple work elements and their interrelations, but it is often a tacit process in a practical design environment. In order to capture and formalize the work elements and their interrelations, it is useful to introduce a process modeling methodology and to analyze and synthesize the design process in an adequate way. This paper proposes a novel Requirement – Definition – Confirmation (RDC) Model for this purpose. The RDC Model describes a design process as the interrelation of three types of design elements: requirement, definition and confirmation. Use of this description can facilitate visualization of iterations, conflicts and uncertainties in the product design process. Such design qualities are often related to engineering risks, and can be used for supporting engineering decisions. We applied our RDC Model framework to automobile design and showed that RDC models effectively visualize the process quality and engineering risks.

Copyright © 2006 by ASME



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