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Destructive & Non-Destructive Testing Flashcards

7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Destructive & Non-Destructive Testing flashcards as text

  1. Which AWS NDT personnel certification standard applies to qualification of nondestructive testing personnel in the welding industry?

    Answer: ASNT SNT-TC-1A

    ASNT SNT-TC-1A is the recommended practice widely referenced by AWS codes for qualifying and certifying NDT personnel.

  2. In ultrasonic shear-wave (angle-beam) testing of a butt weld, the inspection angle is chosen primarily based on:

    Answer: The weld joint geometry and expected flaw orientation

    The refracted shear-wave angle is selected so that the beam sweeps through the weld volume and strikes likely flaws at approximately 90 degrees for maximum reflectivity.

  3. A root bend specimen that shows a linear indication longer than 3.2 mm (1/8 in.) after bending is considered:

    Answer: Rejectable per AWS D1.1

    AWS D1.1 rejects bend specimens that show any crack or open defect exceeding 3.2 mm in any direction after bending.

  4. What is the primary advantage of phased array ultrasonic testing (PAUT) over conventional single-element UT?

    Answer: It can electronically steer and focus the beam without moving the probe

    PAUT uses multiple elements fired in programmed time delays to electronically sweep, steer, and focus the ultrasonic beam, providing faster and more versatile inspection.

  5. During radiographic testing, scattered radiation is controlled primarily by using:

    Answer: Lead intensifying screens and masking

    Lead screens absorb scatter and intensify the image, while lead masking around the film prevents side and back scatter from degrading image quality.

  6. A macro-etch test on a weld cross-section is primarily used to evaluate:

    Answer: Internal weld structure, fusion, and discontinuities

    Macro-etching with an acid solution reveals the weld profile, heat-affected zone boundaries, fusion line, and internal discontinuities such as cracks or porosity.

  7. Which type of discontinuity is LEAST likely to be detected by magnetic particle testing?

    Answer: Subsurface laminations deeper than 6 mm

    MT sensitivity drops significantly with depth; subsurface discontinuities deeper than approximately 6 mm typically produce insufficient leakage flux for detection.