An experimental and numerical study on the behavior of strengthening corroded steel plates using stepped ends of thin-ply hybrid FRP composites is carried out. The results showed that the hybrid strengthening of corroded steel plates mainly affected the elastic behavior. Debonding of FRP laminate was also witnessed after steel yield. Increasing the number of carbon layers increased the stiffness of the strengthened corroded plate. An enhancement in yielding load was achieved as the volume percentage of lower strain fiber in hybrid combinations decreases. The higher the tensile strength to the layer thickness ratio the higher the load of the strengthened specimen. The strengthening scheme using combination of one glass layer followed by one layer of medium elastic carbon increases the yield limit by 13% for 67% reduction in thickness where the same strengthening increases the yield limit by 7% for 22% reduction in thickness.

对使用薄层混合 FRP 复合材料的阶梯端加强腐蚀钢板的行为进行了实验和数值研究。结果表明，腐蚀钢板的混合强化主要影响其弹性行为。FRP 层压板在钢材屈服后也出现剥离。增加碳层的数量增加了强化腐蚀板的刚度。随着混合组合中低应变纤维的体积百分比降低，屈服载荷得到提高。拉伸强度与层厚之比越高，强化试样的载荷就越高。