Reliability of technical systems

The design of technical systems and their components with respect to fatigue strength require methods that consider the complete process of development and its aftercare. Most projects originate from the vehicle or supplier industry. In picture: brake disc.

Durability and Reliability

Reference loads which have been derived based on statistical methods on the system level need to be cascaded to subsystems and components. Simulation models of the entire system are excited accordingly and section loads for all components of interest are calculated. Mostly multibody simulation techniques and corresponding commerical software tools are used here.

Systemsimulation
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These section loads are further processed for numerical validation such as FE-based life estimation methods or to derive rig test excitations. In the latter case, it is often an issue to reduce the possibly high number of section loads to a small set of loads which can be applied to a component with corresponding actuators of a rig.

Once the configuration and the loads of a rig test are fixed, the number of specimens and the duration of tests necessary for demonstrating a required reliability with given statistical confidence need to be calculated.

Our department provides various innovative approaches and solutions to such issues.

Particular Core Areas

Simplified Rig Tests

Fatigue Testing and Reliability