6
The next step is
measuring the bar’s thickness at the spot you want to test by using calipers
.
Over its complete length, our bar has a thickness of 20 mm. In case of bars of unusual forms, you
might have to measure the thickness of various spots.
Now you can carry out the actual ultrasound measurement.
Apply enough ultrasound gel on the
spot you want to measure and lay the measurement head onto it.
Now the device will give you
the object’s thickness. In our example, the value matches exactly with the previously established
thickness. This means that the selected sound speed of 4329 m/s for this object at this spot is
correct.
Summary of Contents for BARSCREENSENSOR
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