BS ISO 24543:2022 Non-destructive testing. Acoustic emission testing. Verification of the receiving sensitivity spectra of piezoelectric acoustic emission sensors
1 Scope
This document specifies a method for the determination of the receiving sensitivity
spectra of a piezoelectric acoustic emission sensor, in absolute units of volts output
per motion input, whereby the motion can be particle displacement (e.g. in nanometres)
or particle velocity (e.g. in millimetres per second) over a frequency range used
for acoustic emission testing, from 20 kHz to about 1,5 MHz, whereby the sensor is
stimulated by a motion pulse in normal direction to the sensor’s face from a directly
coupled piezoelectric transmitter .
This document also specifies a method for the determination of the transmitting sensitivity
spectrum of a piezoelectric transmitter in absolute units, for example, in nanometres output per volt input, by measuring
both the particle displacement pulse over the transmitter ’s active face and the transmitter ’s input voltage spectrum, using a scanning laser vibrometer .
This document does not include the known cancellation effects on a sensor’s response,
when the angle of incidence differs from normal (90°) or when the length of the wave
passing across the sensor’s sensitive face is shorter than about 10 times the dimension
of the sensor’s sensitive face.
This document does not specify a method to measure the influence of different materials
on a sensor’s sensitivity, but this effect is addressed in Annex F.
NOTE The methods described in this document can be considered for use with other than piezoelectric
se...
BS ISO 24543:2022 history
2022BS ISO 24543:2022 Non-destructive testing. Acoustic emission testing. Verification of the receiving sensitivity spectra of piezoelectric acoustic emission sensors