Product Regeneration

The CRC 871 “Regeneration of Complex Capital Goods” aims to develop scientific basics for the maintenance of complex capital goods in order to maintain or to “regenerated” as many components as possible of the respective total system, so that functional characteristics of the capital goods will be restored or even be improved.

Efficient and durable - Regeneration of complex capital goods

What we offer

The maintenance of jet engines, wind turbines and railway vehicles is an expensive business. In order to keep the proportion of operating costs to a minimum, mainentance (regeneration) must be made more efficient and sustainable. At the same time, the functional properties of the individual components that make up the capital goods should be restored or optimised to the greatest extent possible, meaning that only a small proportion of worn components need to be replaced by new ones. This saves
resources and protects the environment.

The Collaborative Research Centre (CRC) 871 “Regeneration of Complex Capital Goods” (Product Regeneration for short) contributes to developing a scientific basis for the maintenance of complex capital goods, structured into 19 subprojects. The jet engine is taken as an example of such an application. The modules and components of jet engines
are extremely complex with regard to their technical
interactions and the conditions governing their use and surroundings. The results obtained can also be transferred to other complex capital goods such as wind turbines, land-based gas turbines and railway vehicles.

Over the past four years, researchers have drawn up the basic foundation for regeneration in the form of turbine blades from an engine. This work will be continued in the future and supplemented by research into “BLade Integrated diSKs” (blisks) as an additional example. With blisks, blades are integrated into the rotor disk. The production and repair of blisks require state-of-the-art computer-based production technologies. One of the aims of CRC 871 at the Faculty of Mechanical Engineering of Leibniz Universität Hannover is to develop new procedures
and to determine the impact of repairs on the overall behavior of the engine.

What we are looking for

Research and industrial cooperations


  • Ideas, proposals, partnerships for projects within research and intelligent energy programmes

Collaboration sought

  • Research & Development
  • Technical Co-operation


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