ISO 1268（见前言）中的各个部分描述了从材料中制备增强塑料板的方法 哪些试样可以切割。这允许复合材料的性质或复合材料的成分 下定决心。这些方法旨在涵盖所有主要类型的钢筋和树脂基体。 试板制备方法的选择取决于: a） 加强措施: ？其性质（玻璃、碳、芳纶等）； ？其形式（粗纱、毡、机织物等）； ？其相对于板材长度、宽度和厚度的方向； ？其在增强塑料中的含量； b） 基体（热固性或热塑性）； c） 地产的预期规模； d） 待评估的生产过程。 因为众所周知，增强塑料的机械性能取决于 如果生产塑料，建议尽可能采用与生产相同的方法制备试板 用于生产塑料。 ISO 1268的这一部分描述了所有方法的通用要求。

The various parts of ISO 1268 (see the foreword) describe methods used to prepare reinforced-plastics plates from which test specimens can be cut. This allows the properties of a composite, or the constituents of the composite, to be determined. The methods are intended to cover all the main types of reinforcement and resin matrix. The choice of test plate preparation method depends on: a) the reinforcement: ？ its nature (glass, carbon, aramid, etc.); ？ its form (roving, mat, woven fabric, etc.); ？ its orientation with respect to the length, width and thickness of the plate; ？ its content in the reinforced plastic; b) the matrix (thermosetting or thermoplastic); c) the magnitude expected for the properties; d) the production process that is to be evaluated. Since the mechanical properties of a reinforced plastic are known to be dependent on the process by which the plastic is produced, it is recommended that the test plates be prepared, if possible, by the same method that will be used to produce the plastic. This part of ISO 1268 describes the general requirements common to all the methods.