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    DING Jie. Proficiency Testing Scheme and Technical Analysis of Ultrasonic Testing of Welding Joints in Steel Structure[J]. Nondestructive Testing, 2011, 33(4): 61-63.
    Citation: DING Jie. Proficiency Testing Scheme and Technical Analysis of Ultrasonic Testing of Welding Joints in Steel Structure[J]. Nondestructive Testing, 2011, 33(4): 61-63.

    Proficiency Testing Scheme and Technical Analysis of Ultrasonic Testing of Welding Joints in Steel Structure

    • A proficiency testing scheme of ultrasonic testing of welding joints in steel structure organized by a third part unit has been introduced. A Z-score testing procedure was applied to evaluate the 92 pieces of PT samples, with the investigation of influence factors on the results as well.
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