The first overall phase is “open”: this means the designer needs to be open to everything – there are no holds barred, nothing is considered to be stupid. There are three more phases to consider, which present the overall philosophy.
#SACRED FIRE COMPRESSOR FULL#
Firstly a need is established secondly the full background to the need is clarified thirdly concepts are developed and finally detailed design takes us to a final outcome. Moving from left to right takes us through the stages presented earlier. However, meeting both comes up with something highly innovative. Meeting just one or the other alone would not achieve the desired outcome. Therefore, I would propose that the main criteria used for filtering would include both the environmental aspects and the functional aspects. If it functions but does not meet the environmental aims, then it has failed too. If it is green, but does not function as cast, well it is not much of use. Which would you have first, the fact the material needs to be ‘green’ or that it ‘functions’. If that were truly the case, then the main criteria would be associated with the material itself. Their aim to produce an ‘environmentally friendly’ cast using an environment friendly/sustainably resourced material. In this case, it could be assumed that the designers were more concerned with identifying a new material for an established process rather than identifying a brand new process. Provide compression similar to or better than Velcro strapping.Ī good example of the PDS-SELECTION combination working is that of the case study illustrated in Figure 1.14. Must be adjustable to fit different diameter legs. Must be able to be applied and reapplied with ease.
Using both binary and 0–5 criterion, use the solutions given in Table 4.2 and assess them against three PDS, but this time against my three main criteria: It should be expanded and modified to clarify the design intent. These temperatures should include production, storage and transportation conditions. Note: The PDS is not the design but the specification for the product and must be completed before any design work is started.Įnvironmental factors: transport and storage environment □Įnvironmental factors: effect of the product on the environment □ The PDS sets out the technical detail of the requirements to be met to achieve a successful product. The PDS is normally prepared by the design and development function for agreement/sign-off by the external or internal customer and by the project team. This is initially a statement by the customer of the design intent but it should be expanded by the design and development function to give all the technical detail and limits that are realistically achievable. In every case, a PDS must be prepared to act as a reference for the objectives of the design.
product range extensions for own-brand products) the customer is internal. In some cases the customer is external and in some cases (e.g.
The PDS is a statement of what the customer wants the product to achieve. The product design specification (PDS) is the essential definition of what the product is required to provide. Robin Kent, in Quality Management in Plastics Processing, 2016 8.2 The product design specification The essential definition