Fiber reinforced plastics resistant to high-speed stresses
Fiber reinforced composites have proved to be efficient solutions for application in aeronautical and automobile construction for example, as a result of their high potential for the realisation of weight optimisation. Alongside advantageous features such as strength and stiffness, conventional composite structures have weak points when faced with high lateral stresses. As well as bird and hail strikes in aviation, there also exist similar questions about rail-based mobility, for example in vibration stresses in electrical systems. These complex problems have been addressed by means of comparable material solutions, however as a result of limited experience, predictions for the stress cases remain very limited.
This is where the collaborative project MAI Impact comes in: In the framework of the project, improved materials should be created for such high speed and vibration stresses and an industrial transfer for lightweight design of wing leading edges and train sub-structures or for housings of generators and motors should be prepared. To this end the results of so-called ballistic tests of conventional materials with corresponding simulation results should be compared and the materials should be adjusted accordingly. In addition innovative particle modified solutions and fiber reinforced composite architecture should be observed and their implementation potential should be evaluated, so that safer and quicker product design chains can be made possible.
Figure: High-speed stress test using a ballistic firing range and simulation comparison for stress cases in aviation and rail mobility. (Source: Siemens AG).
The method and material innovative solutions provided for in the MAI Impact project can therefore be a worthwhile contribution towards the production of stress resistant materials and cost-reduced CFRP components. The work will therefore provide a worthwhile contribution towards the overall aim of the BMBF leading edge cluster MAI Carbon and for the build-up of innovative CFRP finishing technologies and process chains in Germany.