Table 32 Glossary; Appendix C: Glossary - Olympus EPOCH 650 User Manual

Appendix C: Glossary

Term
Acoustic impedance
Acoustic interface
Acoustic velocity
Amplifier
Amplitude
Analog output
Angle beam
transducer

Table 32 Glossary

A material property defined as the product of sound
velocity (C) and material density (d).
The boundary between two media of different acoustic
impedance.
The speed of sound in a test material. Different wave
modes such as longitudinal and shear will have different
velocities.
An electronic device that increases the strength of a signal
fed into it by obtaining power from a source other than the
input signal.
The height of an indication on a waveform display,
measured from the lowest to the highest point on the
indication. This corresponds to relative signal strength
and is often referred to as %FSH (percent full screen
height).
A data output format consisting of a DC voltage whose
amplitude corresponds to a measured parameter such as
echo amplitude or depth.
A transducer that transmits or receives the acoustic energy
at an angle to the surface to generate refracted shear waves
or surface waves in the part being inspected.
DMTA-10055-01EN, Rev. A, February 2015
Definition
Glossary 321