EVS-EN 583-3:1999

This part of the standard specifies the principles of transmission techniques.  Transmission techniques can be used for:   - detection of imperfections;  - determination of attenuation.  The general principles required for the use of ultrasonic examination of industrial products are described in part 1 of this standard.  The transmission technique is used for examination of flat products, e.g. plates and sheets.  Further, it is used for examinations e.g.:   - where the shape, dimensions or orientation of possible imperfections are unfavourable for direct reflection;  - in materials with high attenuation;  - in thin products.