Fiberglass/Epoxy Composite Coil Spring

This weight-saving epoxy/fiberglass composite coil spring is the first of its kind to be used in the suspension system of a series-production vehicle. Using a patented, modified filament winding process, the application replaced traditional steel coil springs, reducing weight 40% and enabling the suspension system to react more quickly to changing road surface conditions, thereby improving vehicle handling and NVH. Significant work was done on resin chemistry and resin/fiber interface to ensure efficient load transfer and long-term mechanical performance,  as well as finding an efficient, cost-effective production method capable of meeting build volumes.

OEM/Vehicle Audi AG 2015 Audi A6 Avant 2.0-L TDI Ultra System Supplier S. Ara Composite S.A.S. Material Processor S. Ara Composite S.A.S.

Material Supplier Hexion Inc. Resin EPIKOTE Confidential Epoxy

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