DMTA-10055-01EN, Rev. A, February 2015
Glossary
329
Transmitter Circuit of the flaw detector that sends the initial pulse
voltage to the transducer.
Ultrasonic Frequencies above the human audible range
(above 20 kHz).
V-path The angular distance sound travels, measured from the
top surface of the material to the bottom, and reflecting
back up to the top surface.
Wavelength The distance between like points on successive wave
fronts; such as the distance between any two successive
particles of the oscillating medium that are in the same
phase. It is denoted by the Greek letter λ (lambda).
Zero offset A time offset between the moment the excitation pulse is
generated and the point at which the screen display and
measurement begins, typically used to subtract transit
time through a wedge, delay line, or wear plate from a
depth or distance measurement.
Table 32 Glossary (continued)
Term Definition
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