ASTM_E_1067_-_E_1067M_-_11.pdf

Designation:E1067/E1067M11Standard Practice forAcoustic Emission Examination of Fiberglass ReinforcedPlastic Resin(FRP)Tanks/Vessels1This standard is issued under the fixed designation E1067/E1067M;the number immediately following the designation indicates the yearof 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*1.1 This practice covers acoustic emission(AE)examina-tion or monitoring of fiberglass-reinforced plastic(FRP)tanks-vessels(equipment)under pressure or vacuum to determinestructural integrity.1.2 This practice is limited to tanks-vessels designed tooperate at an internal pressure no greater than 1.73 MPaabsolute 250 psia above the static pressure due to the internalcontents.It is also applicable for tanks-vessels designed forvacuum service with differential pressure levels between 0 and0.10 MPa 0 and 14.5 psi.1.3 This practice is limited to tanks-vessels with glasscontents greater than 15%by weight.1.4 This practice applies to examinations of new and in-service equipment.1.5 UnitsThe values stated in either SI units or inch-pound units are to be regarded as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.(For more specificsafety precautionary information see 8.1.)2.Referenced Documents2.1 ASTM Standards:2D883 Terminology Relating to PlasticsD5436 Specification for Cast Poly(Methyl Methacrylate)Plastic Rods,Tubes,and ShapesE543 Specification for Agencies Performing NondestructiveTestingE650 Guide for Mounting Piezoelectric Acoustic EmissionSensorsE750 Practice for Characterizing Acoustic Emission Instru-mentationE1316 Terminology for Nondestructive ExaminationsE2075 Practice for Verifying the Consistency of AE-SensorResponse Using an Acrylic RodE2374 Guide for Acoustic Emission System PerformanceVerification2.2 ANSI/ASNT Standards:SNT-TC-1ARecommended Practice for NondestructiveTesting Personnel Qualification and Certification3ANSI/ASNT CP-189 Standard for Qualification and Certifi-cation of Nondestructive Testing Personnel32.3 AIA Standard:NAS-410 Certification and Qualification of NondestructivePersonnel(Quality Assurance Committee)43.Terminology3.1 Complete definitions of terms related to plastics andacoustic emission will be found in Terminology D883 andE1316.3.2 Definitions of Terms Specific to This Standard:3.2.1 FRPfiberglass reinforced plastic,a glass-fiber poly-mer composite with certain mechanical properties superior tothose of the base resin.3.2.2 operating pressurethe pressure at the top of a vesselat which it normally operates.It shall not exceed the designpressure and it is usually kept at a suitable level below thesetting of the pressure-relieving devices to prevent theirfrequent opening.1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.04 onAcoustic Emission Method.Current edition approved July 1,2011.Published July 2011.Originally approvedin 1985.Last previous edition approved in 2007 as E1067-07.DOI:10.1520/E1067-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org.4Available from Aerospace Industries Association of America,Inc.(AIA),1000Wilson Blvd.,Suite 1700,Arlington,VA22209-3928,http:/www.aia-aerospace.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.3 pressure,designthe pressure used in design to de-termine the required minimum thicknesses and minimummechanical properties.3.2.4 processora circuit that analyzes AE waveforms.(See Section 7 and A1.8.)3.2.5 summing amplifier(summer,mixer)an operationalamplifier that produces an output signal equal to a weightedsum of the input signals.3.2.6 zonethe area surrounding a sensor from which AEcan be detected by that sensor.4.Summary of Practice4.1 This practice consists of subjecting equipment to in-creasing pressure or vacuum while monitoring with sensorsthat are sensitive to acoustic emission(transient stress waves)caused by growing flaws.The instrumentation and technique