NF EN ISO 1522-2007 Paints and varnishes Pendulum damping test is an international standard for evaluating the impact performance of Paints and varnishes coatings. The standard specifies the determination of the toughness and damage resistance of coatings under stress by the Pendulum damping method. The impact resistance of coatings is assessed by impacting the coating surface with a swing rod and observing the deformation, crazing or flaking of the coating. The standard details the requirements for the test equipment, sample preparation, test procedures and methods for evaluating the results. This method is suitable for quality control and performance evaluation of various Coating systems, especially in evaluating the impact resistance, toughness and durability of coatings. This standard provides a reliable technical basis for the development, production and application of Coatings.