ISO 16823:2012规定了传输技术的原理。 传输技术可用于:a）缺陷检测；b） 衰减的测定。 ISO 16810中描述了工业产品超声波检测的一般原则。 传输技术用于检查扁平产品，例如板材和薄板。 此外，它还用于检查，例如:1）可能缺陷的形状、尺寸或方向不利于直接反射；2） 在高衰减材料中；3） 在薄型产品中。

ISO 16823:2012 specifies the principles of transmis-sion techniques. Transmission techniques can be used for: a) detection of imperfections; b) determination of attenuation. The general principles required for the use of ultrasonic examina-tion of in-dustrial products are described in ISO 16810. The transmission technique is used for examination of flat pro-ducts, e.g. plates and sheets. Further, it is used for examinations e.g.: 1) where the shape, dimensions or orientation of possible imperfections are unfavourable for direct reflection; 2) in materials with high attenuation; 3) in thin products.