Characterization of the Quasi-Static Axial Crushing of Multi-Tubular FRP Composite Structures Using Commercially Available FRP Tubes and PU Foam Filling
Experimental investigation reveals that internal tubing configurations and polyurethane foam significantly enhance energy absorption in FRP composites.
Key Points
The inclusion of polyurethane foam improves the crushing force efficiency and overall energy absorption of various composite structures.
Experimental results indicated that carbon and Kevlar reinforced polymer tubes significantly enhanced load-bearing capacities in axial crushing tests.
Using braided carbon fiber tubes as inner tubes provided the best improvements in energy absorption during axial loads.
The specific energy absorption factor varies due to the extra weight introduced by polyurethane foam, impacting efficiency.