1.1 本试验方法涵盖了用于工业射线照相的胶片系统性能测定程序。该测试方法建立了与系统类相对应的最低要求。 1.2 本试验方法仅适用于用铅增感屏曝光的直接曝光型胶片。用这种测试方法无法准确测定荧光（发光）增强屏曝光的薄膜的性能。 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 本试验方法为工业射线照相用胶片系统的分类提供了一种相对方法。薄膜系统由薄膜和相关的处理系统（处理和处理化学的类型）组成。部分 9 描述了用于该测试方法的具体参数。一般来说，硬X射线的分类，如第节所述 9 ，可以转移到其他辐射能量和金属屏幕类型，以及没有薄膜的屏幕。在指定的能量范围之外使用胶片系统参数可能导致胶片/系统性能分类的变化。 4.1.1 胶片性能通过对比度和噪声参数来描述。对比度由梯度表示，噪声由粒度表示。 4.1.2 如果胶片系统满足最低性能参数，则为其指定一个特定类别:对于渐变 G 在 D —— D 0 = 2.0和 D —— D 0 = 4.0，梯度/噪声比 D —— D 0 = 2.0，最大性能参数:粒度 σ D 在 D = 2.0版本。 4.2 该测试方法描述了如何测量参数，并演示了如何构建分类表。 4.3 工业射线照相胶片系统和显影剂化学的制造商将是该测试方法的用户。 结果是一个分类表，如中给出的示例所示 表2 另一个表还包括用于用户信息的速度数据。工业射线照相胶片系统的用户也可以进行本测试方法中概述的测试和测量，前提是使用所需的测试设备并严格遵守该方法。 （A） 电影系列，在速度和图像质量方面各不相同。 4.4 工业射线照相胶片系统类别的公布将使指定机构和缔约方能够就能够提供已知图像质量的特定系统类别达成一致。 看见 8.2 。 4.5 ISO 11699–1和欧洲标准EN 584-1描述了工业射线照相胶片系统的相同分类方法，但其类别定义和类别数量与该测试方法不完全一致。这些标准的国际用户应意识到其特定应用的这些差异。 注1: ASTM研究报告E07-1005包含本试验方法开发过程中使用的技术方法文件。 4.

1.1 This test method covers a procedure for determination of the performance of film systems used for industrial radiography. This test method establishes minimum requirements that correspond to system classes. 1.2 This test method is to be used only for direct exposure-type film exposed with lead intensifying screens. The performance of films exposed with fluorescent (light-emitting) intensifying screens cannot be determined accurately by this test method. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This test method provides a relative means for classification of film systems used for industrial radiography. The film system consists of the film and associated processing system (the type of processing and processing chemistry). Section 9 describes specific parameters used for this test method. In general, the classification for hard X-rays, as described in Section 9 , can be transferred to other radiation energies and metallic screen types, as well as screens without films. The usage of film system parameters outside the energy ranges specified may result in changes to a film/system performance classification. 4.1.1 The film performance is described by contrast and noise parameters. The contrast is represented by gradient and the noise by granularity. 4.1.2 A film system is assigned a particular class if it meets the minimum performance parameters: for Gradient G at D – D 0 = 2.0 and D – D 0 = 4.0, and gradient/noise ratio at D – D 0 = 2.0, and the maximum performance parameter: granularity σ D at D = 2.0. 4.2 This test method describes how the parameters shall be measured and demonstrates how a classification table can be constructed. 4.3 Manufacturers of industrial radiographic film systems and developer chemistry will be the users of this test method. The result is a classification table as shown by the example given in Table 2 . Another table also includes speed data for user information. Users of industrial radiographic film systems may also perform the tests and measurements outlined in this test method, provided that the required test equipment is used and the methodology is followed strictly. (A) Family of films ranging in speed and image quality. 4.4 The publication of classes for industrial radiography film systems will enable specifying bodies and contracting parties to agree to particular system classes, which are capable of providing known image qualities. See 8.2 . 4.5 ISO 11699–1 and European standard EN 584-1 describe the same method for classification of film systems for industrial radiography, but its class definitions and number of classes do not align exactly with this test method. International users of these standards should be aware of these differences for their particular applications. Note 1: ASTM research report E07–1005 contains documentation of technical methods used during the development of this test method. 4