Txhawm rau kom ua tiav cov txiaj ntsig kev soj ntsuam zoo dua, nws yog qhov tseem ceeb kom raug xaiv qhov tsis raug rau kev soj ntsuam acoustic emissions hauvmid-frequency chaw vuam tshuabcov cuab yeej saib xyuas.Cov tsis muaj xws li: lub ntsiab amplifier nce, vuam theem pib, spatter threshold theem, tawg theem pib, tawg ncua sij hawm, tawg lub sij hawm, zaus qhov rais, lub sij hawm qhov rais, thiab lwm yam. Cov tsis yuav tsum tau xaiv raws li acoustic emission yam ntxwv ntawm vuam, spatter. , thiab tawg.
Tshwj xeeb tshaj yog, thawj plaub qhov kev txwv tsuas yog xaiv raws li txoj haujlwm ntawm lub suab emission teeb liab ntawm lub sijhawm axis thiab qhov loj ntawm lub teeb liab amplitude.Lub ntsiab amplifier nce yuav tsum tau ua kom haum nrog tus nqi pib.Nws yuav tsum tsis txhob xav tias qhov nce siab dua yog qhov zoo dua, thiab qis dua qhov tseem ceeb yog qhov zoo dua.
Lub qhov rais zaus yog hais txog qhov nruab nrab zaus ntawm cov transducer thiab lim thiab qhov sib txawv zaus teb cov yam ntxwv.Cov chaw sib txawv muaj cov cim cuam tshuam sib txawv, yog li lub qhov rais xaiv zaus yuav tsum tau txais cov txiaj ntsig zoo tshaj plaws acoustic emission signals thaum tsis txhob cuam tshuam.
Lub sij hawm lub qhov rais yog teem kom tshem tawm cov teeb liab cuam tshuam los ntawm cov input acoustic emission teeb liab.Nws yog ib qho tseem ceeb los kho lub logic tswj rooj vag rau qhib thiab kaw lub qhov rooj thiab lub sij hawm yuav tsum tau qhov rais qhov rais thiab lub sij hawm qhov rais xaiv.Nws yuav tsum raug kuaj, tshuaj xyuas, thiab nkag siab txog cov yam ntxwv ntawm lub suab nrov emission qhov chaw thiab ib puag ncig lub suab nrov ua ntej ua qhov kev xaiv txaus siab.
Thaum lub sij hawm qhov chaw vuam, vim qhov khaus melting thiab gasification ntawm txheej nyob rau hauv lub vuam cheeb tsam, nrog spatter nyob rau hauv thawj theem ntawm vuam, loj tawg-hom acoustic emission signals yog generated nyob rau hauv thawj lub voj voog ntawm qhov chaw vuam, tab sis cov teeb liab no muaj. me ntsis ua nrog kev tsim ntawm lub weld nugget.
Yog li ntawd, lub sij hawm lub qhov rais yuav tsum tau kho ua ntej kom tsis txhob muaj acoustic emission signals tau txais nyob rau hauv thawj lub voj voog.Lwm tus yam ntxwv ntawm qhov chaw vuam galvanized steel daim hlau yog qhov sib tshuam loj amplitude acoustic emission pulses nyob rau hauv lub sij hawm lig ntawm qhov chaw vuam, tshwm sim los ntawm gasification ntawm residual zinc nyob rau hauv lub vuam cheeb tsam.Lub sijhawm no, lub sijhawm lub qhov rais yuav tsum tau kho kom tshem tawm cov acoustic emission pulses loj.
Lub qhov rais lub sij hawm no yuav tsum raug kaw kom tsis txhob muaj kev soj ntsuam tsis muaj tseeb.Raws li cov thev naus laus zis no, kev sib raug zoo ntawm txoj kab uas hla ntawm lub vuam nugget thiab lub zog acoustic emission suav thaum lub sij hawm qhov chaw vuam ntawm galvanized steel daim hlau yog tsim.
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Post lub sij hawm: Apr-22-2024