Long-term creep of hybrid aramid/glass-fiber-reinforced plastics

The results of experimental investigation of the long-term creep of SVM aramid fibers. EDT-10 epoxy resin, aramid-epoxy FRP (fiber-reinforced plastics), glass-epoxy FRP, and aramid/glass-epoxy, hybrid FRP with different volume fractions of aramid and glass fibers are presented. The long-term tests were continued for 50, 000 h (5.7years). A structural approach for predicting the long-term creep from the properties and content of the components is considered. The effect of hybridization (partial replacement of the aramid fibers by glass fibers) on the inelastic deformation of hybrid FRP is discussed. The redistribution of stresses in the components during long-term creep of the hybrid composites is analyzed.