This standard provides a uniform test method for evaluating the interfacial bonding performance between the surface coating formed by laser cladding repair technology and the substrate material. It specifies the principle and procedure for determining the interfacial bonding strength by axially stretching a specific notched specimen until fracture. The core testing equipment is an electronic universal material testing machine (or tensile testing machine) that meets metrological requirements. It must be equipped with specialized fixtures with high coaxiality to hold the specimen and apply a tensile load at a constant low speed (typically not exceeding 1 mm per minute). The implementation of this method helps scientifically assess the service safety of repaired components and serves as a key foundation for promoting the engineering application of this repair technology.