标准编号：ISO 16826:2012
中文名称：无损检测 超声波检测 垂直于表面的裂缝检查
英文名称：Non-destructive testing — Ultrasonic testing — Examination for discontinuities perpendicular to the surface
发布日期：2012-04
标准范围
This International Standard defines the principles for tandem- and longitudinal-longitudinal-transverse (LLT)wave examination for the detection of discontinuities perpendicular to the surface.The general principles required for the ultrasonic examination of industrial products are described in ISO 16810. A list of symbols and equations is given in ISO 16811.The tandem- or LLT-examination should be used for the detection of planar discontinuities with distance to the surface greater than 15 mm. This International Standard has been prepared for the examination of metallic ma-terials with a thickness between 40 mm and 500 mm with parallel or concentric surfaces. It can, however, be used for other materials and smaller thickness provided special measures are taken.
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