Non-destructive testing — Ultrasonic testing — Detection of planar defects in metallic materials using the through-transmission technique. which iso

The standard you are referring to for non-destructive testing (NDT) with ultrasonic techniques is ISO 17640. This standard specifically addresses the detection of planar defects in metallic materials using the through-transmission technique in ultrasonic testing. If you are looking for more specific applications or additional guidelines, it's important to consult the latest version of the ISO standard and any related documents that might apply to your specific context.