Experimental Study on Scarf Repair of Composite Laminates under Different Loading Conditions

Abstract

Scarf repair can not only restore the strength and stiffness of the structure, but also maintain the smoothness of the aerodynamic profile. It’s an important permanent repair method for composite structures. In this paper, the mechanical properties of scarf repair composites under different loading conditions were investigated through experiments. Tensile and tensile-shear tests under different environments were conducted, and different repair parameters as well as the influence of the environment on the repair strength, stiffness and failure modes were investigated through experiments. Key issues requiring attention in the scarf repair of aircraft composite structures were proposed.