1.1 System performance verification methods stimulate the examination article on which the sensor is mounted. The resulting stress wave travels in the examination article and is detected by the sensor(s) in a manner similar to acoustic emission.

1.2 This guide describes methods which can be used to verify the response of an Acoustic Emission system including sensors, couplant, sensor mounting devices, cables and system electronic components.

1.3 Acoustic emission system performance characteristics, which may be evaluated using this document, include some waveform parameters, and source location accuracy.

1.4 Performance verification is usually conducted prior to beginning the examination.

1.5 Performance verification can be conducted during the examination if there is any suspicion that the system performance may have changed.

1.6 Performance verification may be conducted after the examination has been completed.