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ASTM E1781-08

Current Revision

Standard Practice for Secondary Calibration of Acoustic Emission Sensors

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1.1 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).

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 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.

The purpose of this practice is to enable the transfer of calibration from sensors that have been calibrated by primary calibration to other sensors.

SDO ASTM: ASTM International
Document Number E1781
Publication Date Dec. 15, 2008
Language en - English
Page Count 7
Revision Level 08
Supercedes
Committee E07.04
Publish Date Document Id Type View
Dec. 15, 2008 E1781-08 Revision
Dec. 10, 1998 E1781-98 Revision
July 10, 2003 E1781-98R03E01 Reaffirmation