【英文标准名称】:StandardGuideforAcousto-UltrasonicAssessmentofComposites,Laminates,andBondedJoints
【原文标准名称】:复合材料、叠层板材和粘接件的声学超声波评定的标准指南
【标准号】:ASTME1495-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E07.04
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:叠层板材;胶粘连接;机械试验;复合材料;试验
【英文主题词】:acousticemission;acousto-ultrasonics;bondedjoints;composites;laminates;materialscharacterization;mechanicalpropertiesassessment;nondestructiveevaluation;nondestructivetesting;stresswavefactor;ultrasonicattenuation
【摘要】:General8212;Conventionalultrasonicsshouldbeconsideredfirstforthedetectionofovertflawssuchasdelaminationsincomposites.Thereafter,AUshouldbeconsideredforcompositesthatareprovedtobefreeofmajorflawsordiscontinuities.TheAUmethodisintendedalmostexclusivelyforassessingthecollectiveeffectsofdisperseddefectsandsubcriticalflawpopulations.ThesearematerialaberrationsthatinfluenceAUmeasurementsandalsounderliemechanicalpropertyvariations,dynamicloadresponse,andimpactandfractureresistance.SpecificAdvantages8212;TheAUmethodcanbeusedtoevaluatecompositelaminateandbondqualityusingaccesstoonlyonesurfaceas,forexample,theexteriorsurfaceofpressurevessels.Itisunnecessarytoutilizeanglebeamfixturesbecausethemethodcanalwaysbeappliedwithprobesatnormalincidence.Themethodcanbeappliedusingdrycouplingwithelastomerpadsattachedtotheprobes,andthereisnoneedtoimmersetheexaminationobjectinwater.GeneralApplications8212;TheAUmethodwasdevisedtoassessdiffusediscontinuitypopulationsandanyassociatedchangesofthemechanicalpropertiesofcompositesandcomposite-likematerials.TheAUmethodhasbeenusedtoevaluatefiber-reinforcedcomposites(6),compositelaminates(7),filament-woundpressurevessels(8),adhesivebonds(9),paperandwoodproducts(10),andcableandrope(11).Themethodhasbeenshowntobeparticularlypracticalforassessingthestrengthofadhesivelybondedjoints.Ithasalsobeenshowntobeusefulforassessingmicroporosity(12),micro-cracking(13),hydrothermalaging(14),anddamageproducedbyimpacts(15)andfatigue(16).1.1Thisguideexplainstherationaleandbasictechnologyfortheacousto-ultrasonic(AU)method.Guidelinesaregivenfornondestructiveevaluation(NDE)offlawsandphysicalcharacteristicsthatinfluencethemechanicalpropertiesandrelativestrengthofcompositestructures(forexample,filament-woundpressurevessels),adhesivebonds(forexample,jointsbetweenmetalplates),andinterlaminarandfiber/matrixbondsinman-madecompositesandnaturalcomposites(forexample,woodproducts).1.2ThisguidecoverstechnicaldetailsandrulesthatmustbeobservedtoensurereliableandreproduciblequantitativeAUassessmentsoflaminates,composites,andbondedstructures.Theunderlyingprinciples,prototypeapparatus,instrumentation,standardization,examinationmethods,anddataanalysisforsuchassessmentsarecovered.LimitationsoftheAUmethodandguidelinesfortakingadvantageofitscapabilitiesarecited.1.3TheobjectiveofAUistoassesssubtleflawsandassociatedstrengthvariationsincompositestructuresandbondedjoints.Discontinuitiessuchaslargevoids,disbonds,orextendedlackofcontactatinterfacescanbeassessedbyotherNDEmethodssuchasconventionalultrasonics.1.4Additionalinformationmaybefoundinthepublicationscitedinthelistofreferencesattheendofthisguide.Thereferencedworksprovidebackgroundonresearch,applications,andvariousaspectsofsignalacquisition,processing,andinterpretation.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibi......
【中国标准分类号】:G38
【国际标准分类号】:19_100;83_180
【页数】:9P.;A4
【正文语种】:
基本信息
| 标准名称： | 石油化工石油气管道阻火器选用、检验及验收 |
| 英文名称： | Specification for selection inspection and acceptance of pipeline flame arresters for petroleum gas in petrochemical industry |
| 中标分类： |
石油 >>
石油勘探、开发、集输设备 >>
油、气集输设备 |
| 发布部门： | 国家石油和化学工业局 |
| 发布日期： | 1999-12-27 |
| 实施日期： | 2000-05-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国石化出版社 |
| 出版日期： | |
| 页数： | 19页 |
适用范围
本标准适用于IIA级烃类爆炸性气体混合物的输送系统、气体回收系统和气体放空系统的阻火器选用、检验及验收。
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所属分类： 石油 石油勘探 开发 集输设备 油 气集输设备