Zone: Pultrusion

Composites for Construction: Using Fasteners to Connect Pultruded Structural Members

This is the sixth column derived from my book Composites for Construction —Â— Structural Design with FRP Materials (see endnote). In this final installment, I will discuss the design basis for connecting pultruded FRP profiles with mechanical fasteners. The fasteners themselves can be metallic or FRP. Adhesively

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New Bridge Deck Bests Early FRP Systems 9/17/2008: Mechanically fastened, two-piece composite deck system addresses challenges inherent in previous fiber-reinforced polymer deck designs, lowering cost, speeding installation and reducing maintenance.
Inside Manufacturing: Multiphase Process Forms Complex Shapes 12/1/2007: Manufacturer adds extrusion and injection molding to thermoplastic pultrusion process to produce corrosion-resistant threaded rod.
Composites for Construction: Using Fasteners to Connect Pultruded Structural Members 12/1/2007: This is the sixth column derived from my book Composites for Construction —Â— Structural Design with FRP Materials (see endnote). In this final installment, I will discuss the design basis for connecting pultruded FRP profiles with mechanical fasteners. The fasteners themselves can be metallic or FRP. Adhesively
Engineering Insights: All-Composite Hovercraft Rises to Performance Challenge 2/1/2007: An exclusive look at a lightweight pultruded and resin-infused design that sets a new standard for amphibious craft.
Composite Rebar Speeds Tunneling Operations 4/1/2006: Pultruded replacement for steel reinforcement in concrete clears path for more efficient use of boring machinery.

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Pultrusion

Pultrusion is a continuous process for the manufacture of composite structures. Parts feature a constant cross-section and are made by pulling continuous reinforced fibers through a resin bath, optionally followed by a separate preforming system, and into a heated die, where the resin undergoes polymerization as the reinforcements are pulled through the die. Resin types typically include polyester, polyurethane, vinyl ester and epoxy. Pultrusion is particularly effective in production of long, relatively narrow parts used as reinforcing members or ribs in a larger structure.