Carbon-fibre-reinforced plastic (CFRP) strengthening of aluminium extrusions

摘要: Abstract The flexural behaviour of compound beams in which unidirectional carbon-fibre-reinforced plastic (CFRP) is externally bonded to extruded aluminium box-sections, discussed. Simple transformed-section analysis and elastic buckling theory have been adapted predict improvements stiffness strength with single-layer reinforcement. Close correlation between experiment observed maximum gains ultimate strengths 75% 63%, respectively, are demonstrated only a 7% weight increase. It shown that the effects adhesive can be neglected when predicting performance hybrid beam. Shape optimisation has successfully applied illustrate potential this technique for ‘new-build’ applications. Initial findings produced savings 33% comparison an all-aluminium optimised box-section.