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1、Designation:E1065E1065M?14StardPracticefEvaluatingacteristicsofUltrasonicSearchUnits1ThisstardisissuedunderthefixeddesignationE1065E1065Mthenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecas
2、eofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thispracticecoversmeasurementproceduresfevaluatingcert
3、ainacteristicsofultrasonicsearchunits(alsoknownas“probes”)thatareusedwithultrasonictestinginstrumentation.Thispracticedescribesmeansfobtainingperfmancedatathatmaybeusedtodefinetheacousticelectricresponsesofultrasonicsear
4、chunits.1.2Theproceduresaredesignedtomeasuresearchunitsasindividualcomponents(separatefromtheultrasonictestinstrument)usingcommercialsearchunitacterizationsystemsusinglabatyinstrumentssuchassignalgeneratspulsersamplifier
5、soscilloscopeswavefmanalyzers.1.3Theproceduresareapplicabletomanufacturingacceptanceincominginspectionofnewsearchunitstoperiodicperfmanceevaluationofsearchunitsthroughouttheirservicelife.1.4TheproceduresinAnnexA1–AnnexA6
6、aregenerallyapplicabletoultrasonicsearchunitsoperatingwithinthe0.4to10MHzrange.AnnexA7isapplicabletohigherfrequencyimmersionsearchunitevaluation.AnnexA8describesapracticefmeasuringsoundbeamprofilesinmetalsfromcontactstra
7、ightbeamsearchunits.AdditionalAnnexessuchassoundbeamprofilingfanglebeamsearchunitsinmetalalternatemeansfsearchunitacterizationwillbeaddedwhendeveloped.1.5ThevaluesstatedineitherSIunitsinchpoundunitsaretoberegardedseparat
8、elyasstard.Thevaluesstatedineachsystemmaynotbeexactequivalentstherefeeachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconfmancewiththestard.1.6Thisstarddoesnotpurpttoaddressallof
9、thesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:2E1
10、316TerminologyfNondestructiveExaminations2.2OtherDocument:StardMethodsfTestingSingleElementPulseEchoUltrasonicTransducers33.Terminology3.1Definitions—FdefinitionsoftermsusedinthispracticeseeTerminologyE1316.3.2Definition
11、sofTermsSpecifictoThisStard:3.2.1aperture—thedimension(s)oftheactiveareaofthepiezoelectricelementofthesearchunitasestablishedbyexperimentation.3.2.2bwidth(BW)—thatptionofthefrequencyresponsethatfallswithingivenlimits.Int
12、histextthelimitsusedarethe6dBlevelasmeasuredfromthepeakofthefrequencyresponse.TheequationusedfBWis:BW5~fu2f1!fc3100(1)where:fu=upperfrequencyf1=lowerfrequencyfc=centerfrequency.Bwidthisexpressedasapercentage.3.2.3centerf
13、requency(fc)—thefrequencyvaluecalculatedtobeatthecenterofthebwidthlimits.3.2.4depthoffield(FD)—asmeasuredontheonaxisprofileofafocusedsearchunitthatptionofthesoundbeamthatfallswithingivenlimits.3.2.5focallength(FL)—ffocus
14、edsearchunitsthedistancefromthelenstothefocalpoint.3.2.6focalpoint(Fp)—ffocusedsearchunitsthepointalongtheacousticaxisofthebeaminwateratwhichthepeak(maximum)pulseechoamplituderesponseisrecdedfromaballtargetreflect.1Thisp
15、racticeisunderthejurisdictionofASTMCommitteeE07onNondestructiveTestingisthedirectresponsibilityofSubcommitteeE07.06onUltrasonicMethod.CurrenteditionapprovedJan.12014.PublishedFebruary2014.iginallyapprovedin1985.Lastprevi
16、ouseditionapprovedin2008asE1065–08.DOI:10.1520E1065_E1065M14.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageonthe
17、ASTMwebsite.3AvailablefromtheAmericanInstituteofUltrasonicsinMedicine14750SweitzerLaneSuite100LaurelMD207075906.ASummaryofChangessectionappearsattheendofthisstardCopyright?ASTMInternational100BarrHarbDrivePOBoxC700WestCo
18、nshohockenPA194282959.UnitedStates15.3Implementationmayrequiremedetailedproceduralinstructionsinafmatoftheusingfacility.5.4Themeasurementdataobtainedmaybeemployedbyusersofthispracticetospecifydescribeprovideaperfmancecri
19、teriafprocurementqualityassuranceserviceevaluationoftheoperatingacteristicsofultrasonicsearchunits.Allptionsofthepracticemaybeusedasdeterminedbytheuser.5.5Themeasurementsaremadeprimarilyunderpulseechoconditions.Todetermi
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