ExoGrid

ExoGrid

November 11, 2006
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Triangulated metal composite frame

ExoGrid is a technology that was initially developed to improve the performance of high-end bicycle frames. In this application, the tubes of a typical triangular space frame are made up of various tubes, each with a different diameter and wall thickness. The goal is to achieve a certain function level while maintaining the lowest possible weight, the highest possible stiffness and strength, the best energy efficiency, and the most desirable aesthetic appearance.

ExoGrid allowed VyaTek Sports to optimize these attributes by reducing the weight of a standard titanium tube through a laser machining operation and then fusing an inner composite tube to the titanium tube through a high pressure/temperature operation. The resulting tube is lighter due to the rule of mixtures of the various metal/composite materials, but also has a higher torsional stiffness (GJ profile), creating a frame that has better energy transmission.

Due to the unique “tunability” of the hybrid tube design, the bending characteristics of the tubes are also softer, thus improving the resilience of the material. The contrasting look of the carbon and metal also creates a stunning look.

Contact: VyaTek Sports, Scottsdale, AZ, USA.

For more information, see Transmaterial: A Catalog of Materials That Redefine our Physical Environment

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