Material Monitoring of a Composite Dome Pavilion Made by Robotic Coreless Filament Winding

Abstract

A hemispherical research demonstration pavilion was presented to the public from April to October 2019. It was the first large-scale lightweight dome with a supporting roof structure primarily made of carbon- and glass-fiber-reinforced composites, fabricated by robotic coreless filament winding. We conducted monitoring to ascertain the sturdiness of the fiber composite material of the supporting structure over the course of 130 days. This paper presents the methods and results of on-site monitoring as well as laboratory inspections. The thermal behavior of the pavilion was characterized, the color change of the matrix was quantified, and the inner composition of the coreless wound structures was investigated. This validated the structural design and revealed that the surface temperatures of the carbon fibers do not exceed the guideline values of flat, black façades and that UV absorbers need to be improved for such applications.

Investigation of the Fabrication Suitability, Structural Performance, and Sustainability of Natural Fibers in Coreless Filament Winding

“…The number of rovings at a certain location in the fiber net can be identified by the winding plan [14]. It can also be counted from the microsections, if the individual bundles are distinguishable by resin-rich interfaces [9]. The sample cross-sectional area can be measured using a caliper as the product of the sample height, width, and a form correction factor [14].…”

“…Coreless filament winding (CFW) emerged in the field of construction, enabling an automated [7] and FE-supported design process [8] for large-scale [9] building components, which can be individualized. In CFW, rovings are placed individually around spatially arranged anchors [10], held in place by a winding fixture.…”

Analysis and Modeling of the System Boundaries of a High-Speed Direct-Yarn-Placement System for In Situ Impregnation of Carbon Fibre Heavy Tows as Textile Reinforcements for Concrete Parts

“…Moreover, some studies explore specialized setups optimized for specific processes, including robotic coreless filament winding systems [23,24,41]. These systems often integrate tension control mechanisms within the effector, ensuring uniform impregnation and winding.…”

Long-span fiber composite truss made by coreless filament winding for large-scale satellite structural systems demonstrated on a planetary sunshade concept

“…However, due to the absence of guide surfaces, CFW lacks consolidation 23 and experiences variations in fiber tension 20 . These effects significantly impact the fiber-fiber interaction, influencing the mesoscopic fiber net configuration and the inner and outer fiber bundle structure 24 . As a result, accurately predicting and controlling the structural properties of the final component becomes difficult.…”