Designation:E1932−12(Reapproved2017)StandardGuideforAcousticEmissionExaminationofSmallParts1ThisstandardisissuedunderthefixeddesignationE1932;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverstechniquesforconductingacousticemission(AE)examinationsofsmallparts.Itisconfinedtoexaminationobjects(ordefinedregionsoflargerobjects)wherethereislowAEsignalattenuationthroughouttheexaminationregion.Thiseliminatestheconsiderationofcom-plexattenuationfactorcorrectionsandmultiplesensorandarrayplacementsbasedonovercomingsignallossesoverdistances.1.2TheguideassumesatypicalAEexaminationasonewherethereisacontrolledormeasuredstressactinguponthepartbeingmonitoredbyAE.Particularemphasisisplacedonsensorandsystemselection,sensorplacements,stressingconsiderations,noisereduction/rejectiontechniques,spatialfiltering,locationdetermination,useofguardsensors,collec-tionofAEdata,AEdataanalysisandreport.ThepurposeoftheAEexaminationistoanalyzehowanobjectunderevaluationiswithstandingtheappliedload.1.3Possibleapplicationsofthisguideincludesmaterialscharacterization,qualitycontrolofproductionprocesses,prooftestingafterfabrication,evaluatingregionsofinterestoflargerstructuresandretestingafterintervalsofservice.Theappliedloadmayincludemechanicalforces(tension,compressionortorsional)internalpressureandthermalgradients.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedby...
