ERFOLG DURCH INNOVATION

Unsere Patente

Technologieportfolio

Zurück

Methods to build CFRP-AL transition structures in lightweight design

THE PROBLEM

Lightweight designs are of great significance in car manufacturing and in the aerospace industry. A light weight and the required resilience are achieved by combining different materials. So-called hybrid components consisting of a metal and a fiber composite laminate, which combine the advantages of each single component, are needed to optimally tune the properties of the materials applied.


At present, metals and fiber composite structures are usually joined by adhesive (gluing) or mechanical (e.g. riveting ) methods. These two coupling techniques produce an overlapping join which has a negative effect on the mechanical properties, weight, and height of the integral component. A high susceptibility to contact corrosion occurs especially when aluminum and carbon fiber are paired.


THE SOLUTION

Bremen's DFG research group "Schwarz Silber" has developed several methods to join aluminum with a fiber composite laminate (carbon fiber), saving space and weight. The transition between the materials lies in a transition zone in which titanium is applied as a transition material. If titanium is welded to the aluminum in a loop, fiber rovings can be led through the loops and then brought into final shape with a resin matrix. Another method fabricates a composite of titanium and fiber laminates, which enables welding on the metal side, and laminating on the fiber side. This invention is now being further developed and brought to application in the scope of a funded research project. Manufacturing has been successful on a laboratory scale, so that material tests are now in progress.


ADVANTAGES AND APPLICATIONS

  • Transmission of very heavy loads
  • Markedly reduced building space as compared with adhesive joining (no thickening)
  • Stability without reinforcement layers
  • No contact corrosion
  • Utilization of different material properties in the material mixture
  • Economical realization and scaling


Benefit:

  • Weight reduction results in a lower energy consumption in the application fields of aerospace industry and car manufacturing

 

 

 

ANWENDUNGSBEREICH

Aerospace industry, car manufacturing

SCHLÜSSELWÖRTER

Hybrid component, CFRP aluminum, composite component, lightweight design

SCHUTZRECHTE

DE102008047333B4
US8722201B2

ANGEBOT

Licensing, cooperation and further development

EINE ERFINDUNG VON

Faserinstitut Bremen e.V., BIAS Bremer Institut für angewandte Strahltechnik, IWT - Leibnitz-Institut für Werkstofforientierte Technologien

DOWNLOADS

Zurück zum Innovationsportfolio

FÜR DIESEN BEREICH BIN ICH IHR ANSPRECHPARTNER.

Wolfgang Vogt, Dipl.-Ing. (FH), Innovationsmanager

Tel.: +49 421 96007-18, wolfgang.vogt@innowi.de