ASTM E2075-00

Standard Practice for Verifying the Consistency of AE-Sensor Response Using an Acrylic Rod

SCOPE
1.1 This practice is recommended 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 is degrading during its service life, or both.
1.2 This procedure is not a "calibration" nor does it give frequency response information. It is simply a way of verifying consistency of sensor peak amptitude response.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided 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.

General Information

• Status: Historical
• Publication Date: 09-Mar-2000
• ICS: 19.100 - Non-destructive testing
• Technical Committee: E07 - Nondestructive Testing
• Drafting Committee: E07.04 - Acoustic Emission Method

Relations

• Replaced By: ASTM E2075-05 - Standard Practice for Verifying the Consistency of AE-Sensor Response Using an Acrylic Rod
• Effective Date: 01-Jun-2005
• Referred By: ASTM E1067/E1067M-18 - Standard Practice for Acoustic Emission Examination of Fiberglass Reinforced Plastic Resin (FRP) Tanks/Vessels
• Effective Date: 10-Mar-2000
• Referred By: ASTM E543-21 - Standard Specification for Agencies Performing Nondestructive Testing
• Effective Date: 10-Mar-2000
• Referred By: ASTM E1118/E1118M-16(2020) - Standard Practice for Acoustic Emission Examination of Reinforced Thermosetting Resin Pipe (RTRP)
• Effective Date: 10-Mar-2000
• Referred By: ASTM E2907/E2907M-13(2019) - Standard Practice for Examination of Paper Machine Rolls Using Acoustic Emission from Crack Face Rubbing
• Effective Date: 10-Mar-2000
• Referred By: ASTM E2863-17 - Standard Practice for Acoustic Emission Examination of Welded Steel Sphere Pressure Vessels Using Thermal Pressurization
• Effective Date: 10-Mar-2000
• Referred By: ASTM E976-15(2021) - Standard Guide for Determining the Reproducibility of Acoustic Emission Sensor Response
• Effective Date: 10-Mar-2000
• Referred By: ASTM E1419/E1419M-15a(2020) - Standard Practice for Examination of Seamless, Gas-Filled, Pressure Vessels Using Acoustic Emission
• Effective Date: 10-Mar-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E 2075 – 00
Standard Practice for
Verifying the Consistency of AE-Sensor Response Using an
Acrylic Rod
This standard is issued under the fixed designation E 2075; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope consistency of sensor response, over time or within a batch,
while holding all other variables constant.
1.1 Thispracticeisrecommendedforroutinelycheckingthe
3.2 While test blocks of many different kinds have been
sensitivity of acoustic emission (AE) sensors. It is intended to
used for this purpose for many years, an acrylic polymer rod
provide a reliable, precisely specified way of comparing a set
offers the best all-round combination of suitable acoustic
of sensors, or telling whether an individual sensor’s sensitivity
properties, practical convenience, ease of procurement and low
is degrading during its service life, or both.
cost.
1.2 This procedure is not a “calibration” nor does it give
3.3 Because the acoustic properties of the acrylic rod are
frequency response information. It is simply a way of verifying
known to depend on temperature, this standard practice re-
consistency of sensor peak amptitude response.
quires that the rod, sensors, and couplant be stabilized at the
1.3 The values stated in SI units are to be regarded as the
same working temperature, prior to application of the practice.
standard. The values given in parentheses are provided for
3.4 Attention should be paid to storage conditions for the
information only.
acrylic polymer rod. For example, it should not be left in a
1.4 This standard does not purport to address all of the
freezing or hot environment overnight, unless it is given time
safety concerns, if any, associated with its use. It is the
for temperature stabilization before use.
responsibility of the user of this standard to establish appro-
3.5 Properly applied and with proper record keeping, this
priate safety and health practices and determine the applica-
procedure can be used in many ways. The user organization
bility of regulatory limitations prior to use.
mustdeterminethecontextforitsuse,theacceptancestandards
2. Referenced Documents
and the actions to be taken based on the lead break results.The
following uses are suggested:
2.1 ASTM Standards:
3.5.1 To determine when a sensor is no longer suitable for
E 650 Guide for Mounting PiezoelectricAcoustic Emission
use;
Sensors
3.5.2 To check sensors that have been exposed to high-risk
E 750 Practice for CharacterizingAcoustic Emission Instru-
conditions, such as dropping, overheating, etc;
mentation
3.5.3 To get an early warning of sensor degradation with
E 976 Guide for Determining the Reproducibility ofAcous-
time. This can lead to identifying conditions of use which are
tic Emission Sensor Response
damagingsensors,andthus,tobetterequipmentcareandlower
3. Significance and Use
replacement costs;
3.5.4 To obtain matched sets of sensors, preamplifiers, or
3.1 Degradation in sensor performance can occur due to
instrumentation channels for more uniform performance of the
dropping, mechanical shock while mounted on the test struc-
total system, or a combination thereof;
ture, temperature cycles, etc. It is necessary and desirable to
3.5.5 To save time and money, by eliminating the installa-
have a simple measurement procedure that will check the
tion of bad sensors; and,
3.5.6 To verify sensors quickly but consistently in the field
This practice is under the jurisdiction of ASTM Committee E-07 on Nonde-
and to assist trouble-shooting when a channel does not pass a
structive Testing and is the direct responsibility of Subcommittee E07.04 on
performance check.
Acoustic Emission Method.
3.6 All the above uses are recommended for consideration.
Current edition approved March 10, 2000. Published May 2000.
Annual Book of ASTM Standards, Vol 03.03. Thepurposeofthispracticeisnottocallouthowtheseusesare
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E 2075
to be implemented, but only to state how the test itself is to be in.) reference mark facing vertically up (12 o’clock). It may be
performed so that the results obtained will be accurate and secured with tape or other means no closer than 12 in. from the
reliable.
reference mark.
5.3 Prepare and power-up the AE measurement system
4. Apparatus
including preamplifier, if used, and connecting cables; allow
4.1 Acrylic Polymer Cylindrical Rod (Fig. 1), should be
warm up time as necessary; verify the system’s performance.
used. The actual material of the acrylic polymer rod is
Verification may be accomplished on the rod using a reference
polymethylmethacrylate.
sensor that is dedicated to this purpose and not exposed to the
4.1.1 Dimensions of the rod should be 78.74 cm (31 in.)
hazards of field use; or, it may be accomplished by electronic
long by 3.81 cm (1.5 in.) in diameter, sensors end cut true and
procedures such as those described in Practice E 750.
smooth with a surface finish of 0.4 µm RMS (0.16 µin.).
5.4 Mount the sensor to be tested on the flat end of the rod
4.1.2 Other lengths of rod are acceptable, provided that
using the prescribed couplant and normal good application
there is sufficient distance to attenuate and prevent reflected
techniques (see Guide E 650). Wipe off old couplant before
signals from the nonsensor end of t
...