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SELECTION OF PHYSICAL EFFECTS BASED ON DISTURBANCES AND ROBUSTNESS RATIOS IN THE EARLY PHASES OF ROBUST DESIGN
Mathias, Johannes; Kloberdanz, Hermann; Eifler, Tobias; Engelhardt, Roland; Wiebel, Marion; Birkhofer, Herbert; Bohn, Andrea
Type:
Year:
2011
Editor:
Culley, S.J.; Hicks, B.J.; McAloone, T.C.; Howard, T.J. & Malmqvist, J.
Author:
Mathias, Johannes; Kloberdanz, Hermann; Eifler, Tobias; Engelhardt, Roland; Wiebel, Marion; Birkhofer, Herbert; Bohn, Andrea
Series:
ICED
Section:
Design for X, Design to X
Page(s):
324-335
Abstract:
Within this paper products are called robust, if uncertainties (property variations and disturbances) from production and use have no or little influence on the result during the use. In order to design products robust from the beginning of the design process, their design is to be carried out in a methodically supported Robust Design process (RD). Therefore, one has to be able to examine robustness already during the concept design. In order to support the concept design of the RD methodically, a catalog is developed here, in which the influencing disturbances are assigned to the single effects. Furthermore, three robustness ratios are defined. These are RI (disturbance based robustness ratio), RII (environment dependent robustness ratio) and RIII (sensitivity dependent robustness ratio). It is the goal of these ratios to enable a selection of physical effects with the help of their robustness based on different amount of information and effort within the early design phases. An exemplary appliance of the catalog and the ratios is carried out with the help of the design of a wrist watch.
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