Xiaori Yang

1 Introduction Fiber-reinforced polymer (FRP) composites are extensively utilized in civil engineering, wind turbine blades, among others, owing to their exceptional specific strength, superior corrosion resistance, and light weight [1-4]. Civil engineering structures are designed for long service lifetimes, which makes the environmental durability of FRP composites a critical issue in structural applications.

1 Introduction In recent years, increasing attention has been paid to environmental protection and energy conservation, which impose greater demands on the environmental friendliness of materials [1-3]. Green composites prepared from both natural fiber reinforcement and bio-based resin matrix possess the unique characteristic of complete biodegradability, which is highly attractive in the field of aerospace [4], automotive [5], medical [6], and sporting goods [7].

Carbon-fiber-reinforced Polymer Composites are extensively utilized in impact-prone structures due to their high specific stiffness and strength. In this paper, the effects of layup structure and impact energy on low-velocity impact response and post-impact residual compressive strength were evaluated, and their quantitative relationships were established using regression analysis.