GB/T 23902-2009
AbolishedNon-destructive testing - Ultrasonic examination - 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 use of the time-of-flight diffraction (TOFD) ultrasonic technique for detecting and sizing discontinuities in welds and wrought materials. It is applied primarily in industrial non-destructive testing contexts, such as pressure vessel, pipeline, and structural steel fabrication, where accurate measurement of flaw height and length is critical for integrity assessment. The method is used as an alternative or complement to conventional pulse-echo ultrasonic testing, particularly for thick-section components.
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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.