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Function-based failure propagation for conceptual design

Published online by Cambridge University Press:  17 April 2009

Daniel Krus
Affiliation:
Department of Mechanical Engineering, Missouri University of Science and Technology, Rolla, Missouri, USA
Katie Grantham Lough
Affiliation:
Department of Interdisciplinary Engineering, Missouri University of Science and Technology, Rolla, Missouri, USA

Abstract

When designing a product, the earlier the potential risks can be identified, the more costs can be saved, as it is easier to modify a design in its early stages. Several methods exist to analyze the risk in a system, but all require a mature design. However, by applying the concept of “common interfaces” to a functional model and utilizing a historical knowledge base, it is possible to analyze chains of failures during the conceptual phase of product design. This paper presents a method based on these common interfaces to be used in conjunction with other methods such as risk in early design to allow a more complete risk analysis during the conceptual design phase. Finally, application of this method is demonstrated in a design setting by applying it to a thermal control subsystem.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2009

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