Ua kom pom kev ntseeg tau: Lub luag haujlwm tseem ceeb ntawmUV Irradiance thiab Uniformity nyob rau hauv Industrial Inspection Teeb
Nyob rau hauv lub ntiaj teb no meej ntawm tsis yog -kev ntsuam xyuas kev puas tsuaj (NDT), qhov ua tau zoo ntawm fluorescent penetrant tshuaj ntsuam xyuas (FPI) thiab sib nqus particle soj ntsuam (MT) hinges tag nrho ntawm kev ua tau zoo ntawm ultraviolet (UV-A) teeb. Ob qhov kev tsis sib xws yog qhov tseem ceeb hauv kev txiav txim siab seb lub teeb yuav tso siab tau qhia qhov tsis xws luag lossis tso cai rau lawv khiav tsis pom:Maximum UV irradiancethiab covuniformity ntawm lub teeb qhov chaw. Kev nkag siab txog kev sib cuam tshuam ntawm cov xwm txheej no yog qhov tseem ceeb rau kev xaiv cov cuab yeej uas tau lees tias kev tshuaj xyuas kev ncaj ncees thiab kev ua raws li cov txheej txheem.
Qhov tseem ceeb ntawm UV Irradiance: Fais Fab Fluorescence
UV irradiance, ntsuas hauv milliwatts ib square centimeter (mW / cm²), ntsuas lub zog ntawm ultraviolet lub teeb poob rau saum npoo. Nws yog lub zog tsav tsheb uas ua rau cov khoom siv fluorescent, ua rau lawv pom lub teeb pom kev.
Txoj Cai Tswjfwm:International cov qauv, xws liISO 3452-3(rau FPI) thiabASTM E 3022 Cov Lus Qhia(rau UV teeb), qhia meej meej txog qhov tsawg kawg nkaus irradiance ntawm1000 µW / cm² (1.0 mW / cm²)ntawm tus qauv ua haujlwm nrug ntawm 400mm (kwv yees li 15.75 nti). Qhov no suav hais tias yog lub hauv paus pib los qhib cov tshuaj fluorescing zoo.
Tshaj qhov tsawg kawg nkaus:Thaum 1.0 mW / cm² yog qhov tsawg kawg nkaus, siab -kev soj ntsuam cov teeb pom kev lag luam feem ntau xa cov irradiance ntau dua-5.0 mW / cm², 10.0 mW / cm², lossis ntau dua- ntawm 50 cm deb. Lub zog siab dua no muab qhov tseem ceeb "kev nyab xeeb margin." Nws them nyiaj rau yam xws li lub teeb laus, roj teeb depletion, ambient teeb cuam tshuam, thiab nqus UV teeb los ntawm cov kab mob los yog pleev xim rau. Qhov ntau dua irradiance ua rau ci dua, pom tseeb dua fluorescent indications, txo cov tshuaj ntsuam xyuas qhov muag thiab ua kom pom qhov me me, qhov tsis xws luag.
Txoj Kev Phem Phem: Qhov Tseem Ceeb Ntawm Lub Teeb Pom Kev Zoo
Thaum cov irradiance siab yog qhov tseem ceeb, nws tsis muaj nuj nqis yog tias nws tsis tau muab faib sib npaug ntawm thaj chaw tshuaj xyuas. Uniformity, feem ntau txhais raws li qhov piv ntawm qhov tsawg kawg nkaus irradiance mus rau qhov siab tshaj plaws irradiance nyob rau hauv qhov chaw (Min:Max), yog dab tsi cais ib tug precision cuab tam los ntawm ib tug yooj yim teeb qhov chaw.
Qhov teeb meem ntawm "Kub Spots" thiab "Cold Spots":Lub teeb uas tsis zoo sib xws yuav ua rau lub teeb ci nrog cov teeb ci hauv nruab nrab ("qhov chaw kub") thiab qhov chaw dim pa ("qhov chaw txias"). Tus neeg soj ntsuam ua haujlwm hauv qhov chaw kub yuav pom cov fluorescence ci ntsa iab, tab sis thaum lawv txav lub teeb, qhov tawg tseem ceeb hauv qhov chaw txias yuav tau txais UV tsis txaus (piv txwv li, qis dua 1.0 mW / cm²) thiab nyob tsis pom.
Ua tiav High Uniformity:Superior UV teeb ua tau zoo sib xws -feem ntau tshaj 80% (a 0.8: 1 piv)los yog zoo dua -los ntawm kev tsim kho qhov muag siab. Qhov no suav nrog kev siv cov khoom siv hluav taws xob ua kom pom tseeb, diffusers, lossis lub tshuab lens uas ua kom cov khoom siv raw los ntawm LED lossis mercury - vapor noob. Ib lub teeb teeb pom kev zoo kom ntseeg tau tias txhua square centimeter ntawm thaj chaw tshuaj xyuas tau txais qhov xav tau yam tsawg kawg nkaus irradiance, tshem tawm cov cheeb tsam ntawm qhov tsis paub tseeb.
Zam Kev Tshawb Fawb Tsis Taus: Ib Txoj Haujlwm ntawm Kev Tsim
Cov lus nug ntawm kev zam kev tsis tuaj yeem kuaj xyuas vim qhov ci tsis sib xws yog teb los ntawm lub teeb tsim thiab ntawv pov thawj.
Yog, Thaum Specifications tau ntsib:Kev soj ntsuam tsis tuaj yeem zam tau zoo los ntawm kev siv lub teeb uasib txhijmuab irradiance zoo tshaj tus qauv yam tsawg kawg nkaus (piv txwv li, Ntau tshaj lossis sib npaug rau 3.0 mW / cm²)thiabUa kom pom kev sib luag siab (Ntau dua lossis sib npaug li 80%) thoob plaws nws cov kab teeb tag nrho ntawm qhov chaw ua haujlwm. Qhov kev sib xyaw ua ke no tau lees tias txawm tias qhov dimmest ntawm lub nqaj xa tawm lub zog txaus rau kev tshwm sim tsis raug.
Lub luag haujlwm ntawm Kev Ntsuas thiab Ntawv Pov Thawj:Cov kws tshuaj ntsuam xyuas tsis tuaj yeem tso siab rau cov neeg tsim khoom thov ib leeg. Kev siv lub ntsuas hluav taws xob UV-A radiometer yog qhov tseem ceeb rau kev txheeb xyuas lub sijhawm ntawm lub teeb tawm. Tsis tas li ntawd, cov teeb ci yuav tsum raug xaiv raws li kev ua raws li ISO / ASTM cov qauv, uas muab cov txheej txheem nruj rau kev ntsuas ob qho tib si irradiance thiab uniformity.
Kev Ua Haujlwm Ua Haujlwm:Txawm tias muaj lub teeb zoo heev, kev kuaj tsis tuaj yeem tshwm sim vim yog tib neeg. Cov kws tshuaj ntsuam xyuas yuav tsum raug cob qhia kom siv lub teeb kom raug, ua haujlwm scanning ntawm qhov chaw thiab xyuas kom meej tias tag nrho cov saum npoo yog khaws cia nyob rau hauv ib feem ntawm lub teeb ntawm qhov raug qhov deb. Lub teeb uas muaj qhov loj me me me me ua rau qhov kev xyaum no yooj yim dua thiab tsis tshua muaj kev ua yuam kev.
Xaus: Irradiance thiab Uniformity li Non-Negotiable Twins
Hauv kev xaus, qhov siab tshaj plaws irradiance thiab qhov chaw tsis sib xws tsis yog kev ywj pheej tshwj xeeb tab sis cov yam ntxwv sib txuas hauv nruab nrab uas txhais tau tias muaj kev ntseeg siab ntawm kev lag luam UV tshuaj xyuas teeb. Lub siab irradiance ua kom muaj "roj" txaus los ua kom muaj fluorescence, thaum qhov tshwj xeeb tsis sib xws ua kom ntseeg tau tias cov roj no tau faib ncaj qha thoob plaws tag nrho cheeb tsam tshuaj xyuas, tsis muaj chaw rau qhov tsis xws luag los nkaum.
Yog li ntawd, kev nqis peev hauv lub teeb uas muab ob qho tib si irradiance siab (tseem ceeb tshaj 1.0 mW / cm²) thiab siab uniformity (Ntau tshaj los yog sib npaug li 80%) tsis yog ib qho kev nyiam tshaj plaws xwb- nws yog ib qho tseem ceeb rau kev ruaj ntseg zoo, kev nyab xeeb ntawm chaw ua haujlwm, thiab kev tswj hwm kev tswj hwm. Nws yog thawj qhov kev tiv thaiv tiv thaiv tus nqi kim thiab txaus ntshai qhov tshwm sim ntawm kev kuaj tsis pom.
