ASTM E2075/E2075M-15
(Practice)Standard Practice for Verifying the Consistency of AE-Sensor Response Using an Acrylic Rod
Standard Practice for Verifying the Consistency of AE-Sensor Response Using an Acrylic Rod
SIGNIFICANCE AND USE
3.1 Degradation in sensor performance can occur due to dropping, mechanical shock while mounted on the test structure, temperature cycles, and so forth. It is necessary and desirable to have a simple measurement procedure that will check the consistency of sensor response, while holding all other variables constant.
3.2 While test blocks of many different kinds have been used for this purpose for many years, an acrylic polymer rod offers the best all-around combination of suitable acoustic properties, practical convenience, ease of procurement and low cost.
3.3 Because the acoustic properties of the acrylic rod are known to depend on temperature, this practice requires that the rod, sensors, and couplant be stabilized at the same working temperature, prior to verifying the sensors.
3.4 Attention should be paid to storage conditions for the acrylic polymer rod. For example, it should not be left in a freezing or hot environment overnight, unless it is given time for temperature stabilization before use.
3.5 Properly applied and with proper record keeping, this practice can be used in many ways. The user organization must determine the context for its use, the acceptance standards and the actions to be taken based on the lead break results. The following uses are suggested:
3.5.1 To determine when a sensor is no longer suitable for use.
3.5.2 To check sensors that have been exposed to high-risk conditions, such as dropping, overheating, and so forth.
3.5.3 To get an early warning of sensor degradation over time. This can lead to identifying conditions of use, which are damaging sensors, and thus, to better equipment care and lower replacement costs.
3.5.4 To obtain matched sets of sensors, preamplifiers, instrumentation channels, or a combination thereof, for more uniform performance of the total system.
3.5.5 To save time and money, by eliminating the installation of bad sensors.
3.5.6 To verify sensors quickly but consistently in the fi...
SCOPE
1.1 This practice is used for routinely checking the sensitivity of acoustic emission (AE) sensors. It is intended to provide a reliable, precisely specified way of comparing a set of sensors, or telling whether an individual sensor's sensitivity has degraded during its service life, or both.
1.2 This practice is not a “calibration” nor does it give frequency response information.
1.3 Units—The values stated in SI units or inch-pound units are to be regarded separately 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 standard.
1.4 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.
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Designation: E2075/E2075M − 15
Standard Practice for
Verifying the Consistency of AE-Sensor Response Using an
1
Acrylic Rod
ThisstandardisissuedunderthefixeddesignationE2075/E2075M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Significance and Use
3.1 Degradation in sensor performance can occur due to
1.1 This practice is used for routinely checking the sensi-
dropping, mechanical shock while mounted on the test
tivity of acoustic emission (AE) sensors. It is intended to
structure, temperature cycles, and so forth. It is necessary and
provide a reliable, precisely specified way of comparing a set
desirable to have a simple measurement procedure that will
of sensors, or telling whether an individual sensor’s sensitivity
check the consistency of sensor response, while holding all
has degraded during its service life, or both.
other variables constant.
1.2 This practice is not a “calibration” nor does it give
3.2 While test blocks of many different kinds have been
frequency response information.
used for this purpose for many years, an acrylic polymer rod
1.3 Units—The values stated in SI units or inch-pound units
offers the best all-around combination of suitable acoustic
are to be regarded separately as standard. The values stated in
properties, practical convenience, ease of procurement and low
each system may not be exact equivalents; therefore, each
cost.
system shall be used independently of the other. Combining
3.3 Because the acoustic properties of the acrylic rod are
values from the two systems may result in non-conformance
known to depend on temperature, this practice requires that the
with the standard.
rod, sensors, and couplant be stabilized at the same working
1.4 This standard does not purport to address all of the
temperature, prior to verifying the sensors.
safety concerns, if any, associated with its use. It is the
3.4 Attention should be paid to storage conditions for the
responsibility of the user of this standard to establish appro-
acrylic polymer rod. For example, it should not be left in a
priate safety and health practices and determine the applica-
freezing or hot environment overnight, unless it is given time
bility of regulatory limitations prior to use.
for temperature stabilization before use.
3.5 Properly applied and with proper record keeping, this
2. Referenced Documents
practice can be used in many ways.The user organization must
2
2.1 ASTM Standards:
determine the context for its use, the acceptance standards and
E650 Guide for Mounting Piezoelectric Acoustic Emission
the actions to be taken based on the lead break results. The
Sensors
following uses are suggested:
E750 Practice for Characterizing Acoustic Emission Instru-
3.5.1 To determine when a sensor is no longer suitable for
mentation
use.
E976 GuideforDeterminingtheReproducibilityofAcoustic
3.5.2 To check sensors that have been exposed to high-risk
Emission Sensor Response
conditions, such as dropping, overheating, and so forth.
E2374 Guide for Acoustic Emission System Performance
3.5.3 To get an early warning of sensor degradation over
Verification
time. This can lead to identifying conditions of use, which are
damagingsensors,andthus,tobetterequipmentcareandlower
replacement costs.
1
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- 3.5.4 To obtain matched sets of sensors, preamplifiers,
structive Testing and is the direct responsibility of Subcommittee E07.04 on
instrumentation channels, or a combination thereof, for more
Acoustic Emission Method.
uniform performance of the total system.
Current edition approved June 1, 2015. Published June 2015. Originally
3.5.5 To save time and money, by eliminating the installa-
approved in 2000. Last previous edition approved in 2010 as E2075 - 10. DOI:
10.1520/E2075_E2075M-15.
tion of bad sensors.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.5.6 To verify sensors quickly but consistently in the field
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and to assist trouble-shooting when a channel does not pass a
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. performance check.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2075/E2075M − 15
FIG. 1 Acrylic Rod Description
3.6 All the above uses are recommended for consideration. 5. Procedure
Thepurposeo
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2075/E2075M − 10 E2075/E2075M − 15
Standard Practice for
Verifying the Consistency of AE-Sensor Response Using an
1
Acrylic Rod
This standard is issued under the fixed designation E2075/E2075M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This practice is used for routinely checking the sensitivity of acoustic emission (AE) sensors. It is intended to provide a
reliable, precisely specified way of comparing a set of sensors, or telling whether an individual sensor’s sensitivity has degraded
during its service life, or both.
1.2 This practice is not a “calibration” nor does it give frequency response information.
1.3 Units—The values stated in SI units or inch-pound units are to be regarded separately 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 standard.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E650 Guide for Mounting Piezoelectric Acoustic Emission Sensors
E750 Practice for Characterizing Acoustic Emission Instrumentation
E976 Guide for Determining the Reproducibility of Acoustic Emission Sensor Response
E2374 Guide for Acoustic Emission System Performance Verification
3. Significance and Use
3.1 Degradation in sensor performance can occur due to dropping, mechanical shock while mounted on the test structure,
temperature cycles, and so forth. It is necessary and desirable to have a simple measurement procedure that will check the
consistency of sensor response, while holding all other variables constant.
3.2 While test blocks of many different kinds have been used for this purpose for many years, an acrylic polymer rod offers the
best all-around combination of suitable acoustic properties, practical convenience, ease of procurement and low cost.
3.3 Because the acoustic properties of the acrylic rod are known to depend on temperature, this practice requires that the rod,
sensors, and couplant be stabilized at the same working temperature, prior to verifying the sensors.
3.4 Attention should be paid to storage conditions for the acrylic polymer rod. For example, it should not be left in a freezing
or hot environment overnight, unless it is given time for temperature stabilization before use.
3.5 Properly applied and with proper record keeping, this practice can be used in many ways. The user organization must
determine the context for its use, the acceptance standards and the actions to be taken based on the lead break results. The following
uses are suggested:
3.5.1 To determine when a sensor is no longer suitable for use.
3.5.2 To check sensors that have been exposed to high-risk conditions, such as dropping, overheating, and so forth.
1
This practice is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.04 on Acoustic Emission
Method.
Current edition approved June 1, 2010June 1, 2015. Published July 2010June 2015. Originally approved in 2000. Last previous edition approved in 20052010 as
E2075 - 05.E2075 - 10. DOI: 10.1520/E2075_E2075M-10.10.1520/E2075_E2075M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2075/E2075M − 15
3.5.3 To get an early warning of sensor degradation over time. This can lead to identifying conditions of use, which are
damaging sensors, and thus, to better equipment care and lower replacement costs.
3.5.4 To obtain matched sets of sensors, preamplifiers, instrumentation channels, or a combination thereof,
...
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