Project Brief
Manufacturing Composite Structures (November 1994)Synchronous In-line CNC Machining of Pultruded LinealsDevelop a cost-effective manufacturing process for making sophisticated composite-based "snap-and-build" systems for rapid construction of large segmented structures such as power transmission towers. Sponsor: Ebert Composites Corporation701 B Street, Suite 620San Diego, CA 92101
Ebert Composites Corporation proposes to develop a comprehensive materials-fabrication, forming, and assembly process for creating large, complex composite structures such as power transmission towers and bridges without using traditional fasteners such as bolts or adhesives. The major challenge is to integrate in a continuous process the composite fabrication step, in which polymeric resins infiltrate and surround networks of reinforcing fibers such as glass, with downstream machining steps. The strategy will be to develop protocols by which specifications generated in computer-aided design steps are translated into numerical codes that feed forward in the process to control the machining operations. The composite-making process, called pultrusion, yields material in many different possible cross-sections. The sophisticated snap-and-build construction method uses a fastenerless linking system which requires machining steps that consistently and reliably produce specific contours on the ends of pultruded sections with very narrow tolerances. The Naval Surface Warfare Center and W.B. Goldsworthy & Associates are subcontractors on the project.
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