Supplemental Materials for: Exploring the Sustainability Potential of Lightweight Structures made from Phormium Tenax Fibers by Hybrid Coreless Filament Winding

<p>This dataset includes geometrical, structural, and physical data on lattice fiber-composite structures made from different fiber materials using hybrid coreless filament winding. In total, 20 samples were manufactured and tested under axial compression, with 5 samples per fiber material. The material-invariant geometrical model of the samples was used for process simulation and is based on a network modeling approach. The dataset consists of three TSV files: coordinates, graph, and samples.</p>
<p>The <strong>coordinates</strong> file lists the Cartesian coordinates in mm for 16 nodes used in the computational design of the samples. Each node is identified by a unique integer and has x, y, and z coordinates, with the z-axis pointing upward. Nodes 1 to 4 represent the bottom corner points of the sample geometry, nodes 5 to 8 are the top corner points, and nodes 9 to 16 are intermediate crossing points at the outer edges. Additional crossing points within the structure are not included, as no fiber deflection occurs there. While the nominal edge length of the samples is 110 mm, the coordinates require more decimal places due to scaling applied to align the total fiber length with empirically determined values.</p>
<p>The <strong>graph</strong> file describes the connectivity between nodes, representing the fiber net as an undirected graph. It includes the node identifier as given in the coordinates file and lists the connected nodes as comma-separated integers. Each connection is bidirectional and mentioned twice in the file. Together with the coordinates file, this file allows reconstruction of the spatial configuration of the samples, as shown in Figure 3 of the associated paper.</p>
<p>The <strong>samples</strong> file contains single-source-of-truth data on the structural performance and physical composition of the 20 samples, labeled by material and sample ID number, with "H" indicating heavy yarn <i>Phormium tenax</i> and "L" indicating light yarn <i>Phormium tenax</i>. It includes the structural stiffness in N/mm, the maximum force in N sustained during destructive axial compression testing before initial structural collapse, and the masses of fiber and resin in g per sample. The composite mass is the sum of fiber and resin masses, and the fiber mass ratio can be calculated by dividing fiber mass by composite mass. The global warming potential (GWP) of each sample can be calculated by adding the GWP of fiber and resin components, determined by multiplying the fiber or resin mass by their material-specific mass-specific GWP values given in Section 3 of the associated paper.</p>