Reliability improvement of car sliding door using axiomatic approach

In this paper, we discuss the potential utilization of the Axiomatic Design methods in order to enhance the development of Failure Modes and Effects Analysis. At first the Axiomatic Design allows to describe the optimisation of decomposition physical-functional of the project. Due to this operation and to the esteemed RPN (RPNe) it is possible to enlighten the most critical components, so to establish a priority order for intervening on components. To use the FMEA it is important to have a very good knowledge of these components to make a new decomposition until reaching the functional requirements (FRs) and design parameters (DPs) leaves. At this state we must apply FMEA, calculating the true RPN. This approach has been validated by its application to the sliding door of Fiat Auto vehicle.