What are the stages in the Optimise Phase?

The Optimise Phase in engineering design focuses on refining solutions and ensuring that they meet the desired criteria effectively. The stages mentioned in the correct choice involve critical activities that align with this objective.

Modeling and prototyping are integral parts of this phase as they allow designers to visualize and test concepts before full-scale production. This step helps identify potential issues and improvements, ensuring that the design functions as intended. Error proofing is also a key element, which involves implementing mechanisms to reduce errors and enhance reliability, leading to a robust final product.

In contrast, other options suggest stages that do not properly fit the Optimise Phase. For example, design testing and feedback collection relate more closely to the evaluation of ideas rather than the optimization of an already developed concept. Research and analysis, combined with conceptual design, typically occur earlier in the design process, focusing on generating ideas rather than refining them. Lastly, final testing and production launch relate to phases that follow the optimization, geared towards preparing for market introduction rather than enhancing existing designs.