Non-destructive testing - Ultrasonic testing - Examination for discontinuities perpendicular to the surface
|Publication Date:||1 April 2012|
|ICS Code (Non-destructive testing):||19.100|
This International Standard defines the principles for tandem-
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.