Lateral Compression Properties of Special-Shaped 3D Tubular Woven Composites

In order to avoid the instability of composite materials laminated tube connection between layer and layer, with green basalt fiber as raw material, through reasonable design, special-shaped 3D (three-dimensional) tubular woven fabrics two different thicknesses shapes were fabricated on a semi-automatic sample loom low cost. The composites by VARTM (vacuum assisted resin transfer molding) process. Load-displacement scatter plots fitting curves energy-displacement obtained lateral compression tests. results showed that same shape,the load energy absorption values increased thickness property was better. For thickness, circular larger than square tube. correlation coefficients load-displacement polynomial formulas calculated least method in Origin 8.5 software all close 1, indicated effect good. This provided direction for research composites.