Standard Test Method for Primary Calibration of Acoustic Emission Sensors

Importancia y uso:

4.1 Transfer Standards—One purpose of this test method is for the direct calibration of displacement transducers for use as secondary standards for the calibration of AE sensors for use in nondestructive evaluation. For this purpose, the transfer standard should be high fidelity and very well behaved and understood. If this can be established, the stated accuracy should apply over the full frequency range up to 1 MHz.

Note 1: The stated accuracy applies only if the transfer standard returns to quiescence, following the transient input, before any wave reflected from the boundary of the calibration block returns to the transfer standard (∼100 μs). For low frequencies with periods on the order of the time window, this condition is problematical to prove.

4.2 Applications Sensors—This test method may also be used for the calibration of AE sensors for use in nondestructive evaluation. Some of these sensors are less well behaved than devices suitable for a transfer standard. The stated accuracy for such devices applies in the range of 100 kHz to 1 MHz and with less accuracy below 100 kHz.

Subcomité:

E07.04

Referida por:

E2863-17, E1067_E1067M-18, E1316-24B, E1118_E1118M-16R20, E2661_E2661M-20E01, E2076_E2076M-15R22, E1888_E1888M-17, E2981-21, E1930_E1930M-17, E1781_E1781M-20

Volúmen:

03.03

Número ICS:

17.140.01 (Acoustic measurements and noise abatement in general)

Palabras clave:

absolute calibration; acoustic emission sensor; breaking capillary; capacitive transducer; nondestructive testing; surface wave; transfer standard;