3DWoodWind: robotic winding processes for material-efficient lightweight veneer components

Abstract

Winding processes are known from fiber composite technology for highly resistance lightweight components for aviation. These fiber-based processes work predominantly with synthetic composites made of carbon or glass fibers. For the construction industry, these additive processes are very promising and resource-efficient building processes, but they are still hardly used in timber construction despite the very high level of digitalization and technical development. The 3DWoodWind research project uses a continuous strip of thin veneer as a sustainable alternative as its application material. Its natural fibers are intact, continuous, and tensile. In the project, three-dimensional winding processes were developed for material-efficient hollow profile lightweight components made of wood. We describe the material system, composed of suitable combinations of veneers and adhesives, and develop computational design methods for filament layout and robotic fabrication methods. We also show an open-source prototype development method, necessary for efficient prototyping. Through several fabrication case studies, we demonstrate the capabilities of the production process, and investigate suitable architectural applications. These hollow lightweight components could save large amounts of material in timber construction and serve as a substitute for concrete or steel components in the future. We conclude by discussing possible applications in the construction industry and future research possibilities.

Continuous CF/PA6 Composite Aircraft Window Frame Manufactured via a Novel Winding Compression Process

“…The aerospace industry commonly uses 2% void vol- It is worth noting that the technique employed in this study achieves the manufacturing of rotary structures with high-quality by using only simple and low-cost winding equipment with the assistance of post-compression molding. However, in future improvement studies or industrial batch production, the use of high-precision automation control systems or robots [31][32][33] for preform winding molding remains recommended to enhance the accuracy of fiber laying paths and the production stability of window frames through this novel winding compression technology.…”