Leader: IEAP CTU

Involved Partners: FHW, EADS, FACC, LAC


WP5 is focused on the characterization of light-weight, fiber reinforced plastic composites (CFRP or GFRP) combined with metallic parts. 


The synergies of the fiber composite materials and metallic parts are advantageous for a number of aeronautic applications. Each composite metallic part type introduces some typical defects. Unfortunately, the X-ray absorption of metallic parts and the rest of the composite structure show significant differences, a serious problem in common CT reconstruction methods. The presence of metallic parts introduces strong artifacts in CT scans of these parts preventing the recognition of low contrast defects in the composite structure. 


A proper correction of the beam hardening effect has to be applied to assure a sufficient quality of the generated images. The artifacts may be successfully suppressed using advanced iterative CT techniques. The developed X-ray simulations will guide the search process of finding solutions and limitation prior to experiments for tasks to be solved. A significant reduction of time and expenses is expected by this way also for future implementation of related methodology in engineering practice. Besides a number of composite metallic part specimens, artificial defects typical for each structural type will be manufactured for the evaluation regarding sensitivity and resolution of the developed methods. 


WP5 aims at:

  • Composites with metallic inlays: The combination of composite materials with metallic inlays solves some disadvantages connected with CFRP and GFRP non-conductivity. 
  • Sandwich structures with metal core: Sandwich panels consist of two thin high strength skins bonded to a thick light-weight core.
  • Metal fasteners: Due to its higher loading capacity, metal fasteners as rivets or bolts are commonly applied for joints between different parts of the structure instead of adhesive bonding.


Developed advanced iterative CT techniques will be adapted for WP3 purpose.The most important outcome of this WP will be the development of new methodologies of the composite metallic parts CT investigation in engineering practice. These methodologies will include experimental setup recommendations, CT reconstruction and simulation software.


This project has received funding from the European Union's Seventh Framework Programme for research,
technological development and demonstration under grant agreement n° 314562.

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