MIKADO – lightweight framework made of composite tubes and cast nodes

– joined via press connections

Composite tube with osteon structure
© Fraunhofer IGCV
Composite tube with osteon structure
Node as a connecting structure
© Fraunhofer IGCV
Node as a connecting structure

Trusses have a high load-bearing capacity with a relatively low dead weight and are used, among other things, for bridges, stage construction, and chassis.

The Mikado project aims to reduce the weight of the truss, increase its application radius and enable a sustainable repair concept through detachable nodes.

  • For this purpose, braided pultrusion produces thin tubes with a diameter of 1-2 mm, which are combined with continuous fibers in a downstream process to form a main tube. This results in low weight, high kink resistance, and the possibility of functional integration via the existing hollow structure.
  • The nodal points are designed and optimized in analogy to the branching of a tree crown. Here, the force transmission is initiated using harmonic radii and transferred to the overall structure. The structural design is based on that of bamboo, i.e., the nodal points are designed as a hollow structure.
  • The elements are detachably joined by bracing, which enables multifunctional use. 

Further projects of the Fraunhofer IGCV in the field of biological transformation


Intelligent search and gripper system: combining additive manufacturing, sensor and control technology, and artificial intelligence with a bionic approach.


Biological transformation along the product life cycle using the example of electrically powered aircrafts.


Component condition monitoring using a »sensitive outer skin«.

Cooperation with Fraunhofer IGCV

Contact us for an individual solution that suits your business needs.

Industry solutions

The key sectors of Fraunhofer IGCV:

  • Mechanical and plant engineering
  • Aerospace
  • Automotive and commercial vehicles


We are shaping the way into the future of efficient engineering, networked production and intelligent multi-material solutions.