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ONORM EN ISO 17640:2019
Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO 17640:2018)
This document defines techniques for manual ultrasonic testing of fusion-welded joints in metallic materials with a thickness greater than equal to 8 mm solid, showing a slight weakening of the ultrasound at temperatures of the test object by 0 to 60 ° C ° C (especially the caused by scattering). It is preferred for welded joints with full penetration, where both the base material and the weld is ferritic. All material-dependent ultrasonic sizes set out in this document refer to steels with the following ultra sound velocity: (5 920 ± 50) m/s for longitudinal and (3 255 ± 30) m/s for transverse waves. Four test classes are specified in this document, correspond to the different probabilities of detection of irregularities. Guidance on the choice of the test classes A, B and C is given in Appendix A. This document determines that the requirements of the test class D, the for...
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Austrian Standards Institute [on]
