Bond–slip behavior of steel and fiber fabric based on experiment and numerical method

The study of bond–slip behavior is important in understanding the implications of fiber fabric-to-steel joints. Most studies have focused on fiber-reinforced polymer panels and fiber fabric, including carbon fiber and basalt fiber, which are also analyzed in the present work. The bond–slip behavior is initially investigated via an experiment. Test specimens are designed to avoid the influence of steel plate. The study reveals how bond length, fiber type, and fiber layer affect bond–slip curves. Following the experiment, a bond–slip model is constructed and validated accordingly. To take the analysis a step further, notable parameters on bond–slip curves are analyzed through parametrical analysis. Then, a stochastic numerical model that considers the randomness of fiber strength, area of fiber sheet, and strength of adhesives, is proposed and used to obtain the probabilistic distribution characteristic of the bond–slip curves.