Dab tsi yog NDE?

Dab tsi yog NDE?

Kev ntsuam xyuas qhov kev ntsuam xyuas (NDE) yog ib lo lus uas feem ntau siv sib hloov nrog NDT. Txawm li cas los xij, technically, NDE yog siv los piav qhia kev ntsuas ntsuas uas muaj ntau dua qhov xwm. Piv txwv li, ib txoj kev NDE yuav tsis tsuas yog nrhiav qhov tsis xws, tab sis nws tseem yuav raug siv los ntsuas qee yam txog qhov ntawd xws li nws qhov loj me, thiab kev taw qhia. NDE yuav raug siv los txiav txim cov khoom siv, xws li pob txha tawv tawv, muaj peev xwm, thiab lwm yam ntawm lub cev.

Qee qhov NDT / NDE thev naus laus zis:

Coob tus neeg twb paub txog qee cov thev naus laus zis uas siv rau hauv NDT thiab NDE los ntawm lawv cov kev siv hauv kev kho mob. Cov neeg feem coob kuj tau muaj xoo hluav taws xob thiab ntau tus niam tau muaj ultrasound siv los ntawm cov kws kho mob los muab kev kuaj mob thaum tseem muaj plab thaum tseem nyob hauv plab. X-rays thiab ultrasound tsuas yog ob peb ntawm cov thev naus laus zis siv nyob hauv thaj teb NDT / NDE. Tus naj npawb ntawm txoj kev kuaj xyuas zoo li loj hlob txhua hnub, tab sis cov lus qhia sai ntawm cov kev siv feem ntau yog muab hauv qab no.

Kev kuaj pom thiab kho qhov muag (VT)

Qhov tseem ceeb tshaj plaws ndt txoj kev yog kev kuaj pom. Kev kuaj pom cov txheej txheem ua raws cov txheej txheem uas yooj yim saib yog pom kev qub txeeg qub teg, siv lub khoos phis tawj tswj hwm thiab ntsuas cov yam ntxwv ntawm ib feem.

Radioography (RT)

RT cuam tshuam nrog kev siv cov neeg nkag mus gamma- lossis x-hluav taws xob los kuaj cov khoom thiab cov khoom lag luam tsis xws luag thiab sab hauv. Lub tshuab xoo hluav taws xob xoo hluav taws xob lossis hluav taws xob isotope yog siv los ua qhov chaw ntawm hluav taws xob. Hluav taws xob yog qhia los ntawm ib feem thiab mus rau zaj duab xis lossis lwm yam xov xwm. Lub keeb kwm tshwm sim qhia sab hauv thiab suab ntawm ib feem. Cov khoom tuab thiab cov kev hloov ntom ntom yog qhia raws li thaj chaw tsaus lossis tsaus nti ntawm zaj duab xis. Cov chaw tsaus nti hauv qhov hluav taws xob hauv qab no los sawv cev hauv voids hauv cov khoom siv.

Sib nqus Particle kuaj (MT)

Qhov qauv NDT ua tiav los ntawm kev sim ua ib qho kev sib nqus hauv cov khoom sib nqus thiab tom qab ntawd plua plav saum npoo nrog cov kua). Cov npoo npoo thiab ze-nto cov khoom sib nqus ua cov hlau nplaum lossis distort teb nyob rau hauv xws li ib txoj kev uas cov hlau hais tau nyiam thiab muaj zog. Qhov no ua rau pom pom qhov pom ntawm qhov tsis xws luag ntawm cov khoom. Cov duab hauv qab no pom tias muaj cov khoom sib xyaw ua ntej thiab tom qab kev soj ntsuam siv cov khoom siv sib nqus qhuav.

Kev Kuaj Ultrasonic (ut)

Hauv ultrasonic kuaj, siab lub suab nrov tsis tau mus rau hauv cov khoom los txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau hloov cov khoom muaj peev xwm. Cov txheej txheem siv ultrasonic feem ntau yog cov tshuaj mem tes yog qhia rau hauv cov khoom xeem thiab cov kev xav tau ntawm cov chaw ua tsis tiav. Hauv qab no yog ib qho piv txwv ntawm shear yoj weld kuaj xyuas. Daim ntawv ceeb toom qhov tseem ceeb txuas ntxiv rau cov kev txwv sab saud ntawm lub vijtsam. Qhov no qhia tau yog tsim los ntawm lub suab xav los ntawm qhov tsis zoo nyob hauv Weld.

Kev Kuaj Penetant (PT)

Cov khoom xeem yog coated nrog kev daws teeb meem uas muaj cov xim pom lossis cov tshuaj fluorescent. Kev daws ntau dhau yog tshem tawm ntawm qhov chaw ntawm cov khoom tab sis tawm hauv nws nyob rau hauv saum npoo tawg tsis xws luag. Tus tsim tawm yog tom qab ntawd tau thov rau kos lub penetrant tawm ntawm qhov tsis xws luag. Nrog fluorescent dyes, Ultraviolet lub teeb yog siv los ua kom cov fluoresce muaj tseeb, yog li tso cai tau pom tau yooj yim. Nrog pom tuag, ua kom muaj xim sib piv ntawm lub penetrant thiab tus tsim tawm ua "ntshav" yooj yim saib. Cov kev qhia liab liab hauv qab no sawv cev tus naj npawb ntawm cov kev tsis xws hauv cov khoom no.

Kev Kuaj Hluav Taws Xob Hluav Taws Xob (et)

Hluav Taws Xob Cov Hluav Taws Xob (EDDY Turnents) yog tsim nyob rau hauv cov khoom siv coj los ntawm kev hloov pauv sib nqus. Lub zog ntawm cov dej eddy tuaj yeem ntsuas tau. Cov khoom siv tsis xws ua rau cuam tshuam hauv kev ntws hauv cov dej ntws uas ceeb toom cov neeg soj ntsuam kom muaj qhov tsis zoo. Eddy cov dej cawv kuj tseem cuam tshuam los ntawm hluav taws xob kev tshaj tawm thiab sib nqus permeability ntawm cov khoom siv, uas ua rau nws ua tau ib co ntaub ntawv raws cov khoom no. Tus kws tshaj lij hauv qab no yog tshuaj xyuas ib lub dav hlau wircraft rau tej yam tsis xws luag.

Kev Kuaj Xaj (LT)

Ntau cov tswv yim tau siv los tshawb nrhiav thiab nrhiav cov kua nplaum hauv siab hauv qhov chaw siab, cov hlab ntsha siab, thiab cov qauv. Cov dej xau tuaj yeem raug kuaj pom los ntawm kev siv cov khoom siv hluav taws xob mloog, kev ntsuas siab ntawm lub siab, thiab cov xab npum yooj yim.

Acoustic emission kev kuaj (AE)

Thaum cov khoom siv khov kho tau ntxhov siab, tsis txaus ntseeg, tsis txaus ntseeg nyob rau hauv cov khoom siv tawg luv ntawm acoustic lub zog hu ua "emissions." Xws li hauv ultrasonic kuaj, acoustic emissions tuaj yeem kuaj pom los ntawm cov neeg tau txais tshwj xeeb. Emission Serves tuaj yeem ntsuas los ntawm kev kawm txog lawv cov kev siv thiab lub sijhawm tuaj sau cov ntaub ntawv hais txog cov peev txheej ntawm lub zog, xws li lawv qhov chaw nyob.