Understanding Acoustic Emission Testing- Reading 1 Part B-A

energy, acoustic emission event- the total elastic energy released by an
emission event.
energy, acoustic emission signal- the energy contained in a detected
acoustic emission burst signal, with units usually reported in joules and
values which can be expressed in logarithmic form (dB, decibels).
evaluation threshold- a threshold value used for analysis of the examination
data. Data may be recorded with a system examination threshold lower than
the evaluation threshold. For analysis purposes, dependence of measured
data on the system examination threshold must be taken into consideration.
event, acoustic emission (emission event)- a local material change giving
rise to acoustic emission.
event count (Ne)- see count, event.
event count rate (N˙ e)- see rate, event count.
Charlie Chong/ Fion Zhang
E1316-05