Reliability Analysis & Design
In the recent engineering design, CAE is actively used to predict performance before the product is manufactured. In the case of fatigue performance, importance of CAE is much more pronounced considering the cost and time for prototyping. The prediction by the CAE, however, is deterministic by nature, while the reality is not like this due to various uncertainties in the materials, loadings and environments. Common practice for this was to apply safety factor to the solution, which is however too heuristic, and may be inadequate for new design. Recent trend is to conduct uncertainty quantification in the CAE process and evaluate the performance in a non-deterministic way. Then, the optimum design is explored under the these conditions. In this lab, the theory and application is studied for reliability analysis and design optimization.