Comparison between elastic properties of theoretical, computational method and experimental results for filament wound composite pipes

This work compared the experimental results obtained through tensile tests of epoxy pipes reinforced with glass fibers, produced by filament winding with angular variations of ±50°, ±52.5° and ±55°. The elastic properties of the pipes were calculated for each typology using the rule of mixtures and classical laminate theory. Concurrently, finite element modeling was performed for each angular variation under a load identical to the experimental case. The obtained values were compared according to the angular variation of each typology. Means and standard deviations were calculated and compared. The values obtained in the tests were convergent with the design and finite element approach. It was also found that for small angular variations, the moduli for a given composite constitution changed significantly, as observed in the results. Furthermore is suggested to modify the strain gages position regarding the winding angles to compare with results achieved.