2023年全國(guó)碩士研究生考試考研英語(yǔ)一試題真題（含答案詳解+作文范文）_第1頁(yè)
已閱讀1頁(yè)，還剩7頁(yè)未讀， 繼續(xù)免費(fèi)閱讀

下載本文檔

版權(quán)說(shuō)明：本文檔由用戶提供并上傳，收益歸屬內(nèi)容提供方，若內(nèi)容存在侵權(quán)，請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)

文檔簡(jiǎn)介

1、Designation:E3022?15StardPracticefMeasurementofEmissionacteristicsRequirementsfLEDUVALampsUsedinFluescentPerantMagicParticleTesting1ThisstardisissuedunderthefixeddesignationE3022thenumberimmediatelyfollowingthedesignatio

2、nindicatestheyearofiginaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thispracticec

3、overstheproceduresftestingtheperfmanceofultravioletA(UVA)lightemittingdiode(LED)lampsusedinfluescentperantfluescentmagicparticletesting(seeGuidesE709E2297PracticesE165E165ME1208E1209E1210E1219E1417E1417ME1444).2Thisspeci

4、ficationalsoincludesreptingperfmancerequirementsfUVALEDlamps.1.2Thesetestsareintendedtobeperfmedonlybythemanufacturertocertifyperfmanceofspecificlampmodels(housingfilterdiodeselectroniccircuitdesignopticalelementscooling

5、systempowersupplycombination)alsoincludeslimitedacceptancetestsfindividuallampsdeliveredtotheuser.Thistestprocedureisnotintendedtobeutilizedbytheenduser.1.3ThispracticeisonlyapplicablefUVALEDlampsusedintheexaminationproc

6、ess.Thispracticeisnotapplicabletomercuryvapgasdisgearcluminescent(fluescent)lampslightguides(fexamplebescopelightsources).1.4Thevaluesstatedininchpoundunitsaretoberegardedasstard.Thevaluesgiveninparenthesesaremathematica

7、lconversionstoSIunitsthatareprovidedfinfmationonlyarenotconsideredstard.1.5Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafe

8、tyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:3E165E165MPracticefLiquidPerantExaminationfGeneralIndustryE709GuidefMagicParticleTestingE1208PracticefFluescentLi

9、quidPerantTestingUsingtheLipophilicPostEmulsificationProcessE1209PracticefFluescentLiquidPerantTestingUsingtheWaterWashableProcessE1210PracticefFluescentLiquidPerantTestingUsingtheHyhilicPostEmulsificationProcessE1219Pra

10、cticefFluescentLiquidPerantTestingUsingtheSolventRemovableProcessE1316TerminologyfNondestructiveExaminationsE1348TestMethodfTransmittanceColbySpectrophotometryUsingHemisphericalGeometryE1417E1417MPracticefLiquidPerantTes

11、tingE1444PracticefMagicParticleTestingE2297GuidefUseofUVAVisibleLightSourcesMetersusedintheLiquidPerantMagicParticleMethods2.2OtherStards:4ANSIISOIEC17025GeneralRequirementsftheCompetenceofTestingCalibrationLabatiesANSIN

12、CSLZ540.3RequirementsftheCalibrationofMeasuringTestEquipment3.Terminology3.1Definitions—GeneraltermspertainingtoultravioletA(UVA)radiationvisiblelightusedinliquidperant1ThistestmethodisunderthejurisdictionofASTMCommittee

13、E07onNondestructiveTestingisthedirectresponsibilityofSubcommitteeE07.03onLiquidPerantMagicParticleMethods.CurrenteditionapprovedSept.12015.PublishedSeptember2015.DOI:10.1520E3022152TheuseofLEDlampsfperantexaminationmaybe

14、coveredbyapatent.Interestedpartiesareinvitedtosubmitinfmationregardingtheidentificationofalternative(s)tothispatenteditemtoASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsib

15、letechnicalcommitteewhichyoumayattend.NOTE:ASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstard.Usersofthisstardareexpresslyadvisedthatdeterminationoft

16、hevalidityofanysuchpatentrightstheriskofinfringementofsuchrightsareentirelytheirownresponsibility.3FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefe

17、rtothestard’sDocumentSummarypageontheASTMwebsite.4AvailablefromAmericanNationalStardsInstitute(ANSI)25W.43rdSt.4thFloNewYkNY10036:www.ansi.g.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959

18、.UnitedStates1systemshallbecapableofmeasuringabsolutespectralirradianceoveraminimumrangeof300to400nm.6.2.1Thesystemshallbecalibratedusingemissionsourcereferencestards.6.3Spectrophotometerdesignedtomeasuretransmittancecol

19、codinatesoftransmittingspecimens.Thesystemshallbeabletoperfmameasurementofregularspectraltransmittanceoveraminimumrangeof300to800nm.7.TestRequirements7.1Lampmodelsusedfnondestructivetesting(NDT)shallbetestedinaccdancewit

20、htherequirementsofTable1.7.2LEDsofUVALampsshallbecontinuouslypoweredwiththeLEDdrivecurrentexhibitingminimumripple(see7.6.5).Theprojectedbeamshallalsonotexhibitanyperceivablevariabilityinprojectedbeamintensity(i.e.strobin

21、gflickeretc.)(see7.4.6).7.3MaximumIrradiance—FixturetheUVAlamp1560.25in(38166mm)abovethesurfaceofaflatlevelwkbenchwiththeprojectedbeamthogonaltothewkbenchsurface.Thelampfaceshallbeparalleltothebenchwithin60.25in.(66mm).E

22、nsurethatbatterypoweredlamps(TypesBC)arefullyged.Turnonthelampallowtostabilizef5min.PlaceaUVAradiometerconfmingto6.1onthewkbench.Adjustthelamppositionsuchthatthefilterofthelampis15.060.25in.(381612.7mm)fromtheradiometers

23、ens.Scantheradiometeracrosstheprojectedbeamintwothogonaldirectionstolocatethepointofmaximumirradiance.Recdthemaximumirradiancevalue.7.4BeamIrradianceProfile—AffixtheUVAlampabovethesurfaceofaflatwkbenchwiththeprojectedbea

24、mthogonaltothewkbenchsurface.7.4.1TypeAlampsshallbesuppliedwithalternatingcurrent(ac)powersupplyatthemanufacturer’sratedpowerrequirement.Powerconditioningshallbeusedtoensureastablepowersupplyfreeofvoltagespikesripplessur

25、gesfromthepowersupplywk.7.4.2TypeBClampsshallbepoweredusingaconstantvoltagepowerdirectcurrent(DC)supplythatprovidesconstantDCpowerattheratedfullygedbatteryvoltage60.5V.7.4.3TheUVAlampshallbeturnedonallowedtostabilizefami

26、nimumof30minbefetakingmeasurements.7.4.4PlacetheUVAradiometeronthewkbench.Adjustthelamppositionsuchthatthefaceofthelampis15.060.25in.(38166mm)fromtheradiometersens.Scantheradiometeracrosstheprojectedbeamintwothogonaldire

27、ctionstolocatethepointofmaximumirradiance.Recdthislocationasthezeropoint.Usinga0.5in.(12.7mm)gridtranslatetheradiometeracrosstheprojectedbeamin0.5in.(12.7mm)incrementstogenerateatwodimensional(2D)plotofthebeamprofile(irr

28、adianceversusposition).Positiontheradiometerusingeitheranxyscannerbymanuallyscanning.Whenmanuallyscanninguseasheetwith0.5in.(1.27cm)finersquaresrecdtheirradiancevalueinthecenterofeachsquare.Thebeamirradianceprofileshalle

29、xtendtothepointatwhichtheirradiancesbelow200W?cm2.7.4.5Generatereptthe2Dplotofthebeamirradianceprofile(seeFig.1).Maptherangeofirradiancefrom200to1000Wcm21000to5000Wcm25000to10000Wcm210000W?cm2.Repttheminimumbeamdiametera

30、t1000200Wcm2.NOTE3—Thedefinedrangesareminimums.Additionalrangesarepermitted.7.4.6Duringtheobservationsof7.4.1through7.4.5noteanyoutputpowervariationsindicatedbyperceivedchangesinprojectedbeamintensityflickerstrobing.Anyv

31、ariationsinobservedbeamintensityflickerstrobingareunacceptable.7.5MinimumWkingDistance—Affixthelampapproximately36in.(900mm)aboveaflatlevelwkbenchcoveredwithplainwhitepaper.Theprojectedbeamshallbethogonaltothecoveredwkbe

32、nchsurface.7.5.1Measurementsshallbeperfmedinadarkenedenvironmentwithlessthan2fc(21.5lux)ofambientlightastabletemperatureat7765F(2563C).7.5.2Ensurethatbatterypoweredlampsarefullyged.TheUVAlampshallbeturnedonallowedtostabi

33、lizefaminimumof30minbefetakingmeasurements.7.5.3Observethebeampatternproducedonthepaper.LowerthelampuntilthebeampatternexhibitsvisiblenonunifmityreductioninintensitybetweentheindividualbeamsgeneratedbyeachLEDelementbyirr

34、egularitiesinthelamp’sopticalpath(Fig.2).Measurethedistancefromthelampfacetowkbenchsurface.Recdthismeasurementastheminimumwkingdistance.7.6TemperatureStability—EmissionSpectrumExcitationIrradianceCurrentRipple—Testingsha

35、llbeperfmedintwostepsatambienttemperatureconditionsatthemaximumoperatingtemperaturereptedbythemanufacturer.TABLE1UVALEDLampTestRequirementsbyLampModelTypeTestRequirementsA7.3MaximumIrradiance7.4BeamIrradianceProfile7.5Mi

36、nimumWkingDistance7.6TemperatureStability7.6.1MaximumHousingTemperature7.6.4EmissionSpectrum7.6.4.7PeakWavelength7.6.4.8FullWidthHalfMaximum(FWHM)7.6.4.8LongestWavelengthatHalfMaximum7.6.4.9ExcitationIrradiance7.6.5Curre

37、ntRipple7.8FilterTransmittanceBC7.3MaximumIrradiance7.4BeamIrradianceProfile7.5MinimumWkingDistance7.6TemperatureStability7.6.1MaximumHousingTemperature7.6.4EmissionSpectrum7.6.4.8FullWidthHalfMaximum(FWHM)7.6.4.8Longest

溫馨提示

  • 1. 本站所有資源如無(wú)特殊說(shuō)明，都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等，如果需要附件，請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙，網(wǎng)頁(yè)內(nèi)容里面會(huì)有圖紙預(yù)覽，若沒有圖紙預(yù)覽就沒有圖紙。
  • 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
  • 5. 眾賞文庫(kù)僅提供信息存儲(chǔ)空間，僅對(duì)用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理，對(duì)用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯，并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
  • 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容，請(qǐng)與我們聯(lián)系，我們立即糾正。
  • 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。

評(píng)論

0/150

提交評(píng)論