【英文标准名称】:StandardGuideforAcousticEmissionExaminationofSmallParts
【原文标准名称】:小部件声发射检验的标准指南
【标准号】:ASTME1932-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:声学测量;声学;噪声发射;无损检验;小部件
【英文主题词】:acousticemission;materialscharacterization;nondestructiveevaluation;nondestructivetesting;productionqualitycontrol;smallparts
【摘要】:ThepurposeoftheAEexaminationistoanalyzehowanexaminationobjectiswithstandingtheappliedload,orifitissufferingfromsomelatentdamage.Consequentlytheemissionactivitymustbeevaluatedinrelationtotheappliedload.Theappliedload(ontheexaminationobject)mayincludemechanicalforces(tension,compressionortorsional),internalpressureandthermalgradients.Itmaybeshorttolong,randomorcyclic.Theappliedloadmaybecontrolledbytheexaminerormayalreadyexistaspartoftheprocess.IneithercasetheappliedloadismeasuredalongwiththeAEactivity.Possibleapplicationsincludethedeterminationofpartintegrity,qualitycontrolassessmentofproductionprocessesonasampledor100%inspectionbasis,in-processexaminationduringaperiodofappliedloadofafabricationprocess(forexample,spotwelding,bonding,soldering,pressing,etc.),proof-testingafterfabrication,monitoringax201C;regionofinterestx201D;(orconcern)ofastructure(forexample,bridgejointorrepair,vessel,pipe),andrex2013;examinationafterintervalsofservice.1.1Thisguidecoverstechniquesforconductingacousticemission(AE)examinationsofsmallparts.Itisconfinedtoexaminationobjects(ordefinedregionsoflargerobjects)wherethereislowAEsignalattenuationthroughouttheexaminationregion.Thiseliminatestheconsiderationofcomplexattenuationfactorcorrectionsandmultiplesensorandarrayplacementsbasedonovercomingsignallossesoverdistances.1.2TheguideassumesatypicalAEexaminationasonewherethereisacontrolledormeasuredstressactinguponthepartbeingmonitoredbyAE.Particularemphasisisplacedonsensorandsystemselection,sensorplacements,stressingconsiderations,noisereduction/rejectiontechniques,spatialfiltering,locationdetermination,useofguardsensors,collectionofAEdata,AEdataanalysisandreport.ThepurposeoftheAEexaminationistoanalyzehowanobjectunderevaluationiswithstandingtheappliedload.1.3Possibleapplicationsofthisguideincludesmaterialscharacterization,qualitycontrolofproductionprocesses,prooftestingafterfabrication,evaluatingregionsofinterestoflargerstructuresandretestingafterintervalsofservice.Theappliedloadmayincludemechanicalforces(tension,compressionortorsional)internalpressureandthermalgradients.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:5P.;A4
【正文语种】: