An experimental study on intraply fiber hybridization of filament wound composite pipes subjected to quasi-static compression loading

This paper aimed to explore the failure modes and crashworthiness characteristics of intraply hybridized fiber reinforced pipes (FRP) made of basalt and glass fiber reinforcements subjected to quasi-static compression loading. Experimental investigations were performed on various fiber orientation angles (+/- 40 degrees, +/- 55 degrees, and +/- 70 degrees) of the basalt FRP, glass FRP and hybridized basalt/glass FRP, fabricated by filament winding technique. Fracture mechanisms of pipe samples were discussed to understand failure modes. Three distinct failure modes as transverse shearing, lamina bending, and local buckling were observed in crushing tests. Hybridized samples proved to fix instability deficiency of pipes by exhibiting the progressive failure as combination of transverse shear and lamina bending crushing modes. Also, experimental results belong them within the range of pipes made of glass and basalt fiber data's as expected. In the view of fiber orientation aspect, decrease in winding angle resulted with the significant increase of energy absorption capability of all pipes. The pipes made of glass fiber showed the best specific energy absorption characteristics with the lowest crushing load efficiency.