Study on the interfacial bonding durability of fiber-reinforced polymer-steel structure for sculptural decorative arts

In order to improve the structural stability of sculpture decorative artworks and prolong the service life of sculpture decorative artworks, the interfacial bonding durability of Fiber-Reinforced Polymer (FRP)-steel structure for sculpture decorative art is studied. Using FRP and steel plates as raw materials and epoxy resin as the bonding material, FRP specimens for sculpture and decorative art were prepared. The bonding performance under high-temperature aging was analyzed by varying the length and width of the FRP materials. The effects of interfacial bonding and slip were examined through room-temperature aging. The impact of high-temperature aging and room-temperature aging on bond durability was compared. The test results showed that after accelerated aging treatment, longer bond lengths reduced the ultimate load-bearing capacity and bond strength. The bonding durability reached its optimal level when the bond length extended to 125[Formula: see text]mm. The bond strength and ultimate load-bearing capacity initially decreased and then increased with greater bond width, and the stress distribution was most favorable when the bond width reached 45[Formula: see text]mm. The increase in aging time led to a decline in bond durability, which was more pronounced in high-temperature environments. To ensure the reliability and safety of the FRP-steel interface bond, it is essential to reasonably control the bond length and width, avoid harsh environments, and pay attention to the high-temperature resistance and chemical stability of the steel surface.