Abstract
The result of a study on the incorporation of uncertainty into engineering design analysis processes is reported. The work presented comprises a review of deterministic and probabilistic design methods in approximating a design performance function and a comparison of their strengths and weaknesses as tools to aid designers in producing optimum designs. Probabilistic design has existed for more than 40 years, but the culture of deterministic design still dominates in engineering manufacture. An important question for the engineer concerns how probabilistic ideas may be used in design, which is the most appropriate probabilistic approach to use and what are the advantages and disadvantages of each approach? The authors seek to contribute towards an answer to these questions through a comparative assessment of probabilistic design techniques and two methods of deterministic design.
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