Part 3 of this standard specifies the test method for evaluating the gluing interface performance of plastic-metal assemblies. With the wide application of plastic and metal materials, especially in the fields of automotive, electronics and aviation, ensuring good adhesion performance between the two is essential for the mass and service life of the product. The standard details the evaluation of the adhesive strength, durability and environmental adaptability of the plastic-metal interface through a series of tests. Test methods include but are not limited to tensile, disbonding and fatigue tests, which are designed to simulate the performance under actual use conditions.