DESIGN FOR DEPENDABILITY - IDENTIFYING POTENTIAL WEAKNESSES IN PRODUCT CONCEPTS
DS 68-5: Proceedings of the 18th International Conference on Engineering Design (ICED 11), Impacting Society through Engineering Design, Vol. 5: Design for X / Design to X, Lyngby/Copenhagen, Denmark, 15.-19.08.2011
Editor: Culley, S.J.; Hicks, B.J.; McAloone, T.C.; Howard, T.J. & Malmqvist, J.
Author: Wendland, Michael; Sadek, Tim
Section: Design for X, Design to X
The increasing competitiveness and the need to create innovative products force manufacturers to replace conventional technologies in their products by new technologies, thus injecting uncertainty in the design process. In this paper an existing design process of a smart memory alloy-actuator, representing the new technology, is analysed with regard to uncertainty and impacts on dependability. In order to systematically reduce the inherent uncertainty and to enable a dependability-oriented design process, a combination of a heterogeneous modelling approach and an “Inverse Functional Modelling” (IFM) method is presented. While the heterogeneous modelling approach enables a successive problem solving and helps the designer to intuitively model a product concept, the IFM method assists to identify non-intended functions and potential failures as well as disturbances at an early stage.
Keywords: NEW TECHNOLOGY; INVERSE FUNCTIONAL MODELLING; HETEROGENEOUS MODELLING; DEPENDABILITY