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Predicting and visualizing cost propagation due to engineering design changes

Predicting and visualizing cost propagation due to engineering design changes

Year: 2017

Section: Design Methods and Tools

Editor: Anja Maier, Stanko Škec, Harrison Kim, Michael Kokkolaras, Josef Oehmen, Georges Fadel, Filippo Salustri, Mike Van der Loos

Author: Georgiades, Alex (1); Sharma, Sanjiv (2); Kipouros, Timoleon (1,3); Savill, Mark (1)

Series: ICED

Institution: 1: Cranfield University, United Kingdom; 2: Airbus, United Kingdom; 3: University of Cambridge, United Kingdom

Section: Design Methods and Tools

Pages: 249-258

ISBN: 978-1-904670-92-6

ISSN: 2220-4342

Abstract

During product development changes in the initial design are ubiquitous. The ability to predict such changes, along with the expected costs, is a challenge on its own. This challenge increases exponentially when a single design change on one element of the system propagates to other components. As change propagates, so does the cost associated with it; where cost is more than just financial. A number of knowledge-based methods have been developed in the past that assist in the prediction of how change propagates through a system, and the impact that it can have on other components. None of the methods developed, however, considers how cost propagates due to design changes. This paper presents a novel methodology for predicting, visualizing, and assessing the propagation of change and the cost associated with it. As part of the methodology, a new method, CP2, has been developed to calculate the propagated costs. The methodology has been applied to a conceptual example of a simple system to demonstrate the procedure and the use of the methods. The visualization of the results arising from this methodology is also demonstrated as a mechanism for design decision-making.

Keywords: Design methodology, Design methods, Design costing, Visualisation, Decision making

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