BS EN ISO 16823:2025

Non-destructive testing. Ultrasonic testing. Through-transmission technique. | Status: Current

1 Scope This document specifies the principles of ultrasonic through-transmission techniques. Through-transmission techniques can be used for:

• — detection of discontinuities;
• — determination of sound attenuation.

The general principles required for the use of ultrasonic testing of industrial products are described in ISO 16810. The through-transmission technique is used for the testing of flat products, e.g. plates and sheets. Further, it can be used for tests, for example:

• — where the shape, dimensions or orientation of possible discontinuities are unfavourable for direct reflection;
• — of materials with high sound attenuation;
• — on thin test objects.