Experimental Investigation of the Effect of Different Parameters on the Behavior of Glass / Epoxy Composite Tubes under quasi-Static axial Loading

Composite tubes may be subjected to quasi-static loads during placement or operation. By determining the impact properties of composite tubes and using them in the design process, the accuracy of the behavior of these structures in a quasi-static loading condition is guaranteed. In the present study, the effect of changing parameters such as pipe diameter, fiber density, fiber alignment angle and the addition of foam on the behavior of glass/epoxy composite tubes under axial loading has been investigated. The force-displacement diagram was extracted for all experiments and compared with other experiments. Also, the specific energy absorption in each experiment was calculated for all samples. The results of this study showed that the change of parameters mentioned on the energy absorption of composite tubes is effective. As the sample's internal diameter and the density of the fibers used to make the sample increases, the specific absorbed energy also increases. Also, the results showed that with increasing foam density up to1400 Kg⁄m^3 , the sample resistance was increased against the loading and the specific energy absorption was increased. From the present study, it was also clear that for samples with fiber density of 400 g/m2 and angle of alignment [±45], the clustering mode was folding with a special pattern, similar to the destruction of metal samples reported by other researchers.