ASTM E1067-07
(Practice)Standard Practice for Acoustic Emission Examination of Fiberglass Reinforced Plastic Resin (FRP) Tanks/Vessels
Standard Practice for Acoustic Emission Examination of Fiberglass Reinforced Plastic Resin (FRP) Tanks/Vessels
SIGNIFICANCE AND USE
The AE examination method detects damage in FRP equipment. The damage mechanisms that are detected in FRP are as follows: resin cracking, fiber debonding, fiber pullout, fiber breakage, delamination, and bond failure in assembled joints (for example, nozzles, manways, etc.). Flaws in unstressed areas and flaws that are structurally insignificant will not generate AE.
This practice is convenient for on-line use under operating stress to determine structural integrity of in-service equipment usually with minimal process disruption.
Indications located with AE should be examined by other techniques; for example, visual, ultrasound, dye penetrant, etc., and may be repaired and tested as appropriate. Repair procedure recommendations are outside the scope of this practice.
SCOPE
1.1 This practice covers acoustic emission (AE) examination or monitoring of fiberglass-reinforced plastic (FRP) tanks-vessels (equipment) under pressure or vacuum to determine structural integrity.
1.2 This practice is limited to tanks-vessels designed to operate at an internal pressure no greater than 0.44 MPa absolute (65 psia) above the static pressure due to the internal contents. It is also applicable for tanks-vessels designed for vacuum service with differential pressure levels between 0 and 0.06 MPa (0 and 9 psi).
1.3 This practice is limited to tanks-vessels with glass contents greater than 15 % by weight.
1.4 This practice applies to examinations of new and in-service equipment.
1.5 The values stated in SI units are to be regarded as standard. The inch-pound units in parentheses may be approximate.
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. (For more specific safety precautionary information see 8.1.)
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:E1067–07
Standard Practice for
Acoustic Emission Examination of Fiberglass Reinforced
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Plastic Resin (FRP) Tanks/Vessels
This standard is issued under the fixed designation E1067; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E1316 Terminology for Nondestructive Examinations
E2374 Guide for Acoustic Emission System Performance
1.1 This practice covers acoustic emission (AE) examina-
Verification
tionormonitoringoffiberglass-reinforcedplastic(FRP)tanks-
2.2 ANSI/ASNT Standards:
vessels (equipment) under pressure or vacuum to determine
SNT-TC-1A Recommended Practice for Nondestructive
structural integrity.
3
Testing Personnel Qualification and Certification
1.2 This practice is limited to tanks-vessels designed to
ANSI/ASNT CP-189 Standard for Qualification and Certi-
operate at an internal pressure no greater than 0.44 MPa
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fication of Nondestructive Testing Personnel
absolute (65 psia) above the static pressure due to the internal
2.3 AIA Standard:
contents. It is also applicable for tanks-vessels designed for
NAS-410 Certification and Qualification of Nondestructive
vacuum service with differential pressure levels between 0 and
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Personnel (Quality Assurance Committee)
0.06 MPa (0 and 9 psi).
1.3 This practice is limited to tanks-vessels with glass
3. Terminology
contents greater than 15% by weight.
3.1 Complete definitions of terms related to plastics and
1.4 This practice applies to examinations of new and in-
acoustic emission will be found in Terminology D883 and
service equipment.
E1316.
1.5 The values stated in SI units are to be regarded as
3.2 Definitions of Terms Specific to This Standard:
standard.Theinch-poundunitsinparenthesesmaybeapproxi-
3.2.1 count value N —an evaluation criterion based on the
c
mate.
total number of AE counts. (See A2.4 of Annex A2.)
1.6 This standard does not purport to address all of the
3.2.2 FRP—fiberglass reinforced plastic, a glass-fiber poly-
safety concerns, if any, associated with its use. It is the
mer composite with certain mechanical properties superior to
responsibility of the user of this standard to establish appro-
those of the base resin.
priate safety and health practices and determine the applica-
3.2.3 high-amplitude threshold—a threshold for large am-
bility of regulatory limitations prior to use. (For more specific
plitude AE events. (See A2.3 of Annex A2.)
safety precautionary information see 8.1.)
3.2.4 low-amplitude threshold—the threshold above which
2. Referenced Documents AE counts (N) are measured. (See A2.2 of Annex A2.)
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3.2.5 operating pressure—thepressureatthetopofavessel
2.1 ASTM Standards:
at which it normally operates. It shall not exceed the design
D883 Terminology Relating to Plastics
pressure and it is usually kept at a suitable level below the
E543 Specification for Agencies Performing Nondestruc-
setting of the pressure-relieving devices to prevent their
tive Testing
frequent opening.
E650 Guide for Mounting Piezoelectric Acoustic Emission
3.2.6 pressure, design—the pressure used in design to
Sensors
determine the required minimum thicknesses and minimum
E750 Practice for CharacterizingAcoustic Emission Instru-
mechanical properties.
mentation
3.2.7 processor—a circuit that analyzes AE waveforms.
(See Section 7 and A1.8.)
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This practice is under the jurisdiction of ASTM Committee E07 on Nonde-
3.2.8 summing amplifier (summer, mixer)—an operational
structive Testing and is the direct responsibility of Subcommittee E07.04 on
amplifier that produces an output signal equal to a weighted
Acoustic Emission Method.
Current edition approved Feb. 15, 2007. Published March 2007. Originally
sum of the input signals.
approved in 1985. Last previous edition approved in 2001 as E1067-01. DOI:
10.1520/E1067-07.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
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Standards volume information, refer to the standard’s Document Summary page on Available fromAerospace IndustriesAssociation ofAmerica, Inc. (AIA), 1000
the ASTM website. WilsonBlvd.,Suite1700,Arlington,VA22209-3928,http://www.aia-aerospace.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E1067–07
3.2.9 zone—the area surrounding a sensor from which AE and evaluated as described in Practice E543. The applicab
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