Temperature and loading speed sensitivity of glass/carbon inter-ply hybrid polymer composites on tensile loading

摘要

This study is focused on the evaluation of the tensile performance of glass/carbon inter-ply hybrid fiber-reinforced polymer composites at different combinations of temperatures and loading speeds. With an increase in the number of carbon/epoxy (CE) ply in glass/epoxy (GE) composites, some of the tensile properties as tensile modulus, strain at failure, and difference of strain at failure of different fibers are enhanced. Further, the change in the stacking sequence of the CE ply at a particular hybrid ratio alters the tensile properties as well as the nature of failure. Placing a CE ply in place of GE ply at the center in the GE composite resulted in hybrid composite (G(2)C(1)G(2)) that imparts pseudo-ductility as well as hybrid effect in the composite. On the other hand, replacing a GE ply with CE at one end (C(1)G(4)) and both ends (C(1)G(3)C(1)) imparted improved strain at failure and positive hybrid effect in the composites. The tensile modulus of G(2)C(1)G(2)outstrips the modulus of CE and GE by 12.05% and 65.95% at a loading speed of 0.1 mm/min and a temperature of 110 degrees C. Fractography analysis of neat as well as hybrid composites was done to analyze the fracture mechanism.