ECS FEMFAT v5.2a FEMFAT offers a complete solution for fatigue engineers. It covers all fatigue aspects of ground vehicles and other machinery. Assessment can be made for all ranges of strength as durability (infinite life), finite life and static strength. FEMFAT can easiliy fit into an existing CAE-process because a multitude of FEA-interfaces and load-time-data interfaces are provided together with a comprehensive material data base. Fatigue analysis can be performed for cast and machined components but also for joints like seam welds, spot welds and self piercing rivets. FEMFAT is split up in several modules to reflect the requirements for different fields of application. Additionally to the fatigue analysis modules there is a range of tools for related topics like friction bearings, pre- and postprocessing for acoustic simulation and submodeling/data mapping. For test engineers we provide an extra tool which covers all kind of signal processing, cycle counting including data compression tasks. Another advanced feature is to automatically perform virtual iteration for MBS-models to generate valuable load spectra.