10 Questions
What should be done if the previous thickness measurement report is not available?
Select three locations with corrosion
How many measurement points should be taken in each selected location for determining original thickness?
3
In thickness measurement, where should the cross-talk barrier be placed in relation to the probe orientation?
Right angle to the groove direction
What is important to ensure proper sound coupling in thickness measurement?
Pressing the probe firmly against the test surface
What should be aligned perpendicular to the center axis of tubular or curved product surfaces during thickness measurement?
The sound barrier material
What type of pressure should be applied when placing the probe on the surface for thickness measurement?
Moderate to firm pressure
What pre-scan activity should be performed before conducting wall thickness scanning?
Setting a pre-determined thickness limit
'Scanning' mentioned in section 11.0 most likely refers to scanning for:
'Scanning' potential defects on the test object surface
'Sound coupling' is essential in ultrasonic testing to:
'Transmit' ultrasonic energy effectively
'Orientation of the probe' should be kept constant in ultrasonic testing to:
'Avoid' calibration errors
Learn about the importance of using specific couplants for ultrasonic testing depending on material surface smoothness and temperature, as well as the requirements for time base and amplitude linearity. Explore the standards mentioned in section 6.5.2 and 8.0.
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