In
ultrasonic testing, very short pulse-waves of
frequencies ranging from 0.5-15 MHz and occasionally up to
50 MHz are used to detect flaws or characterize materials.
It is also commonly used to determine the exact thickness of the
test object - monitoring pipe work corrosion being a good
example.
Ultrasonic
Inspection is most often performed on steel and other metals, though it
can be used on concrete and other materials. It is a form of
non-destructive testing used in many industries including aerospace,
automotive and other transportation sectors.
A
handheld transducer connected to an ultrasonic instrument is
passed over the object being tested. The transducer sends
pulsewaves into the surface of the object, returning the "sound"
back to the device whenever an imperfection is detected. The
screen on the diagnostic machine will show these results in the
form of amplitude, and time-delayed readings.
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Ultrasonic
Technology
