ISO 16828:2012定义了应用飞行时间衍射（TOFD）技术用于低合金碳钢部件不连续检测和尺寸调整的一般原则。它还可以用于其他类型的材料，前提是TOFD技术的应用必须考虑几何形状，材料的声学特性以及检测的灵敏度。 尽管一般来说，对于ISO 16810涵盖的材料和应用的不连续性，它包含对焊接应用的引用。为了清楚起见，选择这种方法是关于超声波探头位置和扫描方向。 除非参考文件另有规定，ISO 16828:2012的最低要求是适用的。 除非另有明确说明，ISO 16828:2012适用于ISO 16811中定义的以下产品类别:a）第1类，无限制; b）第2类和第3类，适用第9条规定的限制。 检查第4类和第5类产品需要特殊程序。这些也在第9条中讨论。 在ISO 10863中描述了使用TOFD进行焊接检查的技术。 相关验收标准在ISO中给出

ISO 16828:2012 defines the general principles for the application of the time-of-flight diffraction (TOFD) technique for both detection and sizing of discontinuities in low alloyed carbon steel components. It can also be used for other types of materials, provided the application of the TOFD technique is performed with necessary consideration of geometry, acoustical properties of the materials, and the sensitivity of the examination. Although it is applicable, in general terms, to discontinuities in materials and applications covered by ISO 16810, it contains references to the application on welds. This approach has been chosen for reasons of clarity as to the ultrasonic probe positions and directions of scanning. Unless otherwise specified in the referencing documents, the minimum requirements of ISO 16828:2012 are applicable. Unless explicitly stated otherwise, ISO 16828:2012 is applicable to the following product classes as defined in ISO 16811: a) class 1, without restrictions; b) classes 2 and 3, restrictions apply as stated in Clause 9. The inspection of products of classes 4 and 5 requires special procedures. These are also addressed in Clause 9. Techniques for the use of TOFD for weld inspection are described in ISO 10863. The related acceptance criteria are given in ISO 15626.