Understanding Acoustic Emission Testing- Reading 1 Part B-A

■ Zonal Location Technique
As the name implies, zonal location aims to trace the
waves to a specific zone or region around a sensor.
This method is used in anisotropic materials or in
other structures where sensors are spaced relatively
far apart or when high material attenuation affects the
quality of signals at multiple sensors. Zones can be
lengths, areas or volumes depending on the
dimensions of the array. A planar sensor array with
detection by one sensor is shown in the upper right
figure. The source can be assumed to be within the
region and less than halfway between sensors.
Charlie Chong/ Fion Zhang