Deutsches Institut fur Normung e. V.

Non-destructive testing - Ultrasonic testing - Examination for discontinuities perpendicular to the surface (ISO 16826:2012)
 N EN ISO 16826

Annotation

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 materials 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.

Автоматический перевод:

Проверка без разрушений - проверка ультразвука - проверка на неоднородности вертикально к поверхности (ИЗО 16826:2012)

Этот Международный стандарт определяет принципы для тандема - и экспертиза волны longitudinal-longitudinal-transverse (LLT) на обнаружение перпендикуляра разрывов на поверхность.