Iterative design process

Identify the five basic steps in an iterative design process. 

We will not describe the iterative design process in any more detail than this. There are many fine books on the subject, and the interested reader is referred to the list at the end of the chapter for further information. After a brief diversion into alternative design strategies in the next section, we will return to the iterative design process to see how the concepts of materials selection fit into mechanical design. 

Figure 8.2 The iterative design process applied to mechanical design of components. Reprinted, by permission, from M. F. Ashby, Materials Selection in Mechanical Design, 2nd ed., p. 9. Copyright 1999 by Michael F. Ashby.

Once satisfactory models have been found, multiple end point activities for new molecules can be predicted and combined to produce a final prioritization or used as part of an iterative design process. This multiparameter evaluation will be covered in the next section. 

In addition to the general applicability of the iterative design process described above, there exist various technical, administrative and safety requirements which are also relevant to all designs of spent fuel storage facilities. These requirements are discussed below. 

This paper infroduces EMA-Tactons, vibrotactile external memory aids (EMA s) that are combined with interactive sonification techniques for the exploration of data. EMA s are used to mark interesting areas in a data set where the user may want to go back to. By explicitly marking them, the user s working memory can be freed, preventing saturation of this kind of memory before an exploratory task is completed. An iterative design process is described in detail for the illustrative case of TableVis. 

Fig 4.3 shows how the SRS and allocation phases are positioned in die lEC safety life cycle model. It is practical to execute these two phases together as part of the iterative design process whereby trial solutions are evaluated and adjusted imtil the best balance between SIS and non-SIS protection is achieved. Fig 4.4 shows the iterative process whereby trial solutions are reviewed, often with the aid of additional hazard analysis work until the overall combination of protection measures is considered to be Ixith feasible and satisfactory. 

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