ASTM E1781/E1781M-13
Standard Practice for Secondary Calibration of Acoustic Emission Sensors

Standard No.

ASTM E1781/E1781M-13

Release Date

2013

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E1781/E1781M-19

Latest

ASTM E1781/E1781M-20

Scope

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

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 Units—The values stated in either SI units or inch-pound units are to be regarded as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standards.

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.

ASTM E1781/E1781M-13 Referenced Document

• ASTM E1106 Standard Method for Primary Calibration of Acoustic Emission Sensors
• ASTM E114 Standard Practice for Ultrasonic Pulse-Echo Straight-Beam Examination by the Contact Method
• ASTM E1316 Standard Terminology for Nondestructive Examinations
• ASTM E494 Standard Practice for Measuring Ultrasonic Velocity in Materials

ASTM E1781/E1781M-13 history

• 2020 ASTM E1781/E1781M-20 Standard Practice for Secondary Calibration of Acoustic Emission Sensors
• 2019 ASTM E1781/E1781M-19 Standard Practice for Secondary Calibration of Acoustic Emission Sensors
• 2013 ASTM E1781/E1781M-13 Standard Practice for Secondary Calibration of Acoustic Emission Sensors
• 2008 ASTM E1781-08 Standard Practice for Secondary Calibration of Acoustic Emission Sensors
• 1998 ASTM E1781-98(2003)e1 Standard Practice for Secondary Calibration of Acoustic Emission Sensors
• 1998 ASTM E1781-98 Standard Practice for Secondary Calibration of Acoustic Emission Sensors