Research Objectives

Scientific Profile of the Collaborative Research Center 805

At the Collaborative Research Center (CRC) 805, researchers from the fields of mechanical engineering and mathematics work closely together. Our common goal is to control uncertainty in load carrying systems. Together, we investigate new methods for product development under uncertainty, enhance procedures in manufacturing, and establish advanced mechatronic and adaptronic technologies to stabilize load-bearing systems during usage.


Examplary load-carrying structures. Sources: Volkswagen, Daimler, Airbus.
Examplary load-carrying structures. Sources: Volkswagen, Daimler, Airbus.

The social and economic impact of uncertainty is tremendous. This is reflected in the alarmingly high number of product recalls. At times, more than one million vehicles a year are recalled by manufacturers in the automotive industry. By controlling uncertainty, product failures can be limited, safety factors can be minimized, current oversizing can be avoided, and thus resources can be saved.

Research Programme

Focus of the second funding period is a holistic approach in order to control uncertainty along all phases of the product life: product development, production and usage. Furthermore, controlling uncertainty is extended towards the first funding period by modularization, scaling, nonlinearities etc. In the second funding period the majority of topics of the closed first funding period are the foundation for the life time encompassing approach to uncertainty control. Based on the results of the first funding period, the following priorities are consistently further developed in the second period:

  • The projects of the project area product development continue to develop methods for robust design, and are increasingly dedicated to the control of epistemic uncertainty.
  • Projects related to the production phase further optimize process chains by means of mathematical methods, design forming and cutting production processes with continuous production quality, and integrate functional materials for active components in synchronization with product shaping.
  • During the usage phase of the load-carrying system, usage-monitoring procedures are developed that provide a permanent recording of the actual stress and strength.

The methodical and technological knowledge will be provided in process models and will be available to the user in an information model. A new SFB demonstrator serves as a common structural framework for a load-carrying system. It will be developed, manufactured as well as numerically and experimentally tested to control uncertainty under the auspices of three new working groups:
I Uncertainty modelling, scaling and modules, II Chaining of uncertainty, variable processes and robust products, and III Active systems.