Numerical and experimental investigation of the interface properties and failure strength of CFRP T-Stiffeners subjected to pull-off load

This paper focuses on interface properties between the composite laminae, and the failure strength of carbon fiber reinforced polymer (CFRP) T-stiffeners in a pull-off test. Interfacial fracture toughness was studied and optimized based on the theoretical method and experimental observations in the scanning electron microscope (SEM) view, due to the insertion of fibers or fiber tows into interface adhesive layers created in the manufacturing...