Surface crack growth in FRP repaired metallic pipes subjected to cyclic bending

Abstract

This research provides a comprehensive analysis of the effectiveness of Fiber-Reinforced Polymer in repairing surface cracks in metal pipes under cyclic bending stress. It combines experimental investigation, finite element analysis, and analytical approaches to explore the crack propagation behavior, the potential for interfacial failure, and the durability of the FRP-to-steel bond under cyclic loading. The findings demonstrate the effectiveness of FRP repair methods, offering insights into the repair process at a microstructural level and introducing a precise analytical prediction technique. This study enhances the understanding of crack growth in FRP-reinforced metal pipes, paving the way for safer and more efficient design in this field.