Time of Flight Diffraction
Increased Details
Similar to PAUT, Time of Flight Diffraction (TOFD) also generates a record of the inspection data that can be easily stored. However, interpreting the results requires specialized knowledge, making it less accessible to the untrained eye. Despite this, TOFD remains an incredibly effective inspection method, particularly for evaluating both new and in-service welds, offering high accuracy and reliability in detecting flaws and assessing weld integrity.
How does it work?
Time of Flight Diffraction (TOFD) utilizes two ultrasonic probes in a pitch-and-catch configuration, with one probe emitting sound waves and the other receiving them. This method relies on the diffraction of ultrasonic waves from the tip of a reflector, enabling more sensitive and accurate sizing of weld defects, irrespective of their orientation. This makes TOFD an invaluable tool when used alongside Phase Array Ultrasonic Testing (PAUT), providing a comprehensive and precise assessment of welds for full inspection and defect detection.
