ASTM E 1781 Standard Practice for Secondary Calibration of Acoustic Emission Sensors
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ASTM E 1781 Document Information:
Title
Standard Practice for Secondary Calibration of Acoustic Emission Sensors
ASTM International
Publication Date:
Dec 10, 1998
Scope:
This practice covers requirements for the secondary calibration of
acoustic emission (AE) sensors.
The secondary calibration yields the frequency response of a sensor to
waves of the type normally
encountered in acoustic emission work. The source producing the signal
used for the calibration is
mounted on the same surface of the test block as the sensor under
testing (SUT). Rayleigh waves are
dominant under these conditions; the calibration results represent
primarily the sensor's
sensitivity to Rayleigh waves. The sensitivity of the sensor is
determined for excitation within
the range of 100 kHz to 1 MHz. Sensitivity values are usually
determined at frequencies
approximately 10 kHz apart. The units of the calibration are volts per
unit of mechanical input
(displacement, velocity, or acceleration).
The values stated in SI units are to be regarded as the standard. The
values given in parentheses
are for information only.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to
establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
Keywords:
- acoustic emission
- acoustic emission sensor calibration
- acoustic emission sensor secondary calibration
- sensor calibration
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