UT Ch5

In a given specification, a technician should look for which of the following details?

a) address of the inspection agency
b) the type of test required
c) make and details of the transport arrangement
d) details of lodging and boarding arrangement
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Terms in this set (18)
The bubbler technique is typically used when the size of the test object is: a) very large so that it cannot be accommodated in an immersion tank, such as with plates and sheets b) very irregular so that it does not make proper contact with a regular contact transducer c) very small d) 20x the probe diametera) very large so that it cannot be accommodated in an immersion tank, such as with plates and sheetsIn the use of the bubbler technique, the sound beam is projected into the material though a column of flowing water and is directed perpendicular to the test surface to produce: a) surface waviness b) far field effects c) greater beam spread d) longitudinal wavesd) longitudinal wavesWhen using the bubbler technique, the incident beam can be adjusted at an angle to the surface to produce: a) shear waves b) standing waves c) longitudinal waves d) surface wavesa) shear wavesThe wheel transducer technique is a variant of the immersion method in that the sound beam is projected through a liquid-filled tire into the test object. The flexible tire helps to adjust the: a) near field of the transducer b) surface contour c) far field d) beam spreadb) surface contourWhat industry most commonly makes application of the wheel transducer technique? a) aircraft b) oil refining c) railroad d) pipelinec) railroadThe through transmission technique is primarily used to: a) measure thickness b) detect discontiuities c) detect the backwall surface d) verify false indicationsb) detect discontiuitiesContact testing of plates for subsurface discontinuities would most likely be performed with: a) longitudinal waves b) shear waves c) surface waves d) lamb wavesd) lamb wavesA basic requirement for pulse echo ultrasonic testing is that: a) the instrument display shows the amplitude of the received signal and the locations of the transducers on the test surface b) the instrument can display a useful amplitude range of about 30db under good conditions c) the pulsing and receiving transducer are of the same type of material d) the same transducer acts as both transmitter and recieverd) the same transducer acts as both transmitter and reciever