GB/T 23902-2021
ActiveNon-destructive testing—Ultrasonic testing—Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
无损检测 超声检测 超声衍射声时技术检测和评价方法
Application Summary AI generated
This standard specifies the application of the time-of-flight diffraction (TOFD) ultrasonic technique for detecting and sizing internal discontinuities in welds and components. It is primarily used in industrial sectors such as pressure vessel manufacturing, pipeline construction, and structural steel fabrication, where accurate sizing of flaws like cracks or lack of fusion is critical for integrity assessment. The method is applied during in-service inspection or production testing to provide quantitative depth measurements of discontinuities, supporting fitness-for-service evaluations.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.