Next-Generation Audi A8 To Feature New Lightweight Tech
Highlights
- The new Audi A8 uses a mix of aluminium, steel, magnesium & CFRP
- Roller hemming provides comfortable entry and improved view
- The A8 now delivers improved torsional rigidity
The rear panel made of CFRP is the biggest component in the occupant cell of the new Audi A8 and contributes 33 per cent to the torsional rigidity of the total vehicle. Furthermore, between six and 19 fibre layers are placed one on top of the other that ensure a load-optimised layout and optimally absorb longitudinal and transverse loads as well as shearing force. These individual fibre layers consist of tapes 50 millimetres wide and can be placed individually in a finished layered package, with any desired fibre angle and minimal trimming of the fibres. This direct-fibre layering process makes it possible to entirely do away with the manufacture of entire sheets.
The highly complex yet energy-efficient production operation of the next-gen Audi A8 uses 14 different joining processes, including roller hemming at the front and rear door cutouts. This mechanical, "cold" technology is used to join the aluminium side wall frame to the hot-formed, steel sheets at the B-pillar, roof line, and sills. The company achieved improvements of up to 36 millimetres at the door cutouts compared to the predecessor model which eases ingress and egress and widens the driver's field of vision around the A-pillar.
Last Updated on April 8, 2017
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