Prioritising engineering change propagation risk estimates

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Abstract

It is essential to assess the effects of change rigorously before a change is implemented, yet design engineers are faced with the problem that an exhaustive analysis of all product parameters affected by change proposals is simply impractical. In this paper, we describe a criticality-based approach to ordering predicted risks. This enables design engineers to concentrate their efforts on the components which are critically disposed to the effects of proposed changes. Using a diesel engine as an example, we show that components which have the most noteworthy risk of causing significant redesign if affected by a change are not always of the highest priority when evaluating effects of change.