Design Solutions

As examples two special probe design solutions shall be presented in this paper ... 

Haber J A, Gunda N V and Buhro WE 1998 Nanostruoture by design solution phase prooessing routes to nanoorystalline metals, oeramios, intermetallios and oomposites J. Aerosol Sol. 29 637... 

Although there are several limits which apply to heat pipe operation, these generally lend themselves to specific design solutions or occur at sufficiently high levels of performance to permit a wide latitude of practical appHcations. The envelope of these limits is shown generically in Figure 3. 

Powder Metallurgy Design Solutions, Metal Powder Industries Federation, Princeton, N.J., 1993. 

For separation processes, a design solution is possible if the number of independent equations equals the number or unknowns. 

Each chapter starts with a description of the topic covered in the chapter. This is followed by a short example highlighting a reported incident involving a batch reaction system. The case study is followed by a listing of key issues and process safety practices unique to the topic. The issues and concerns presented in this book, as well as potential design solutions and sources of additional information are presented in the tables. This format concisely conveys the necessary and relevant information in a familiar and convenient format. The organization of the tables is described below. 

CCPS G-39. Guidelines for Design Solutions for Process Equipment Eailures. American Institute of Chemical Engineers, Center for Chemical Process Safety, New York. 

There is a strong eorrelation between assembly effieieney and reported defeet levels for a number of Motorola produets evaluated using the Boothroyd-Dewhurst DFMA teehnique (Branan, 1991). From the results of the study, it is elaimed that DFA euts assembly defeets by 80% and, therefore, has a direet influenee on manufae-turing quality. This may be due to the faet that more effieient design solutions have relatively fewer eomponent parts whieh naturally infers fewer quality problems. However, early life failures, whieh are eaused by latent defeets, are not neeessarily highlighted by DFA teehniques. 

The use of computers is essential in probabilistic design (Siddal, 1983). However, research has shown that even the most complete computer supported analytical methods do not enable the designer to predict reliability with sufficiently low statistical risk (Fajdiga et al., 1996). Far more than try to decrease the statistical risk, which is probably impossible, it is hoped that the approach will make it possible to model a particular situation more completely, and from this provide the necessary redesign information which will generate a reliable design solution. 

Manufacturing and technical feasibility of new component design solutions need to be validated... 

The two Ziegler-Niehols PID tuning methods provide a useful rule of thumb empirieal approaeh. The eontrol system design teehniques diseussed in Chapters 5 and 6 however will generally yield better design solutions. 

Guidelines for Design Solutions to Process Equipment Eailures Safety (1997)... 

Modeling of Chemioal Kinetios and Reaotor Design Solution... 

A design represents a considerable investment by the organization. There is therefore a need for a formal mechanism for management and the customer (if the customer is sponsoring the design) to evaluate designs at major milestones. The purpose of the review is to determine whether the proposed design solution is compliant with the... 

The input data for the review should be distributed and examined by the review team well in advance of the time when a decision on the design has to be made. A design review is not a meeting. However, a meeting will often be necessary to reach a conclusion and to answer questions of the participants. Often analysis may need to be performed on the input data by the participants in order for them to determine whether the design solution is the most practical and cost effective way of meeting the requirements. 

This space truss is seemingly an unusual example, but space is now a part of our everyday lives. Thus, there are many space examples in which you must expect to use composite materials because they are the least-expensive design solution. The raw material cost is not even close to the bottom-line cost. The raw material cost has something to do with the bottom line, but the ordering of material choices that you get based on raw material cost does not mean anything in comparison to the ordering of the actual bottom-line costs. 

Management usually wishes to see alternatives to a particular design in order to say that the alternatives have been considered. Unique design solutions are rare consequently, the layout planner will normally be able to interpret the results of the finding of the study to show alternative possibilities. Each alternative option should be accompanied by a critique listing the advantages and disadvantages. 

Figure 1.2 shows design as an iterative procedure as the design develops the designer will be aware of more possibilities and more constraints, and will be constantly seeking new data and ideas, and evaluating possible design solutions. 

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