XFRP spring with varying fiber mixture
fiber and plastic springs expand reversible energy absorption capacity
Exhibitors
Location
Hall 11, Stand B06
Description
Springs are used where components need to transfer loads and still allow elasticity. In the high-performance spring sector of the automotive, robotics or aerospace industries, high strength, good fatigue behavior, corrosion resistance and lightness are required. Common steel springs reach their limits here. Better alternatives are springs made of fiber-reinforced plastics. They consist of two basic components: the fibers, which absorb the energy, and a plastic matrix, which encloses the fibers as a shaping element. .Researchers of the KIT have developed an optimization method for the layer structure and the fiber orientation within the fiber-plastic composite. For the first time, different fiber types are combined in one and the same spring. The X in the designation XFRP springs stands for this fiber variable, in which the fiber concentration and orientation can also be varied within the composite. The fibers are arranged in such a way that an optimum utilization of the fibers takes place over the load cross-section. In this way, the strength of the respective material within the spring is consistently brought to bear, and the stress distribution is homogenized. XFRP springs can store more energy per spring length or spring length is saved. The efficiency of the spring is increased while the weight is reduced. New spring shapes become possible, which also simplifies functional integration. With the targeted layer structure, the development team has already been able to demonstrate an increase in work absorption capacity of 35 percent with a simultaneous weight reduction of 65 percent relative to the calculated values of a steel spring with dynamic design.
You can get an overview of this technology at KIT stand. More details can be exchanged individually with the responsible scientific employees of KIT after the industry fair.
Contact
Karlsruher Institut für Technologie (KIT)
- Kaiserstr. 12
- 76131 Karlsruhe
- Germany
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