01 Daim Ntawv Taw Qhia: Vim lawv lub zog tshwj xeeb tshwj xeeb, titanium alloys ua cov ntaub ntawv tseem ceeb hauv kev lag luam aviation thiab siab - khoom tsim khoom kawg. Txawm li cas los xij, thaum lub sij hawm laser welding txheej txheem, cov alloys no nquag muaj teeb meem xws li cov ntshav hloov pauv, tsis ruaj khov weld nkag mus, thiab kub tawg. Tsis yog ib txwm txuas txuas laser vuam los yog arc- laser hybrid vuam tuaj yeem ua tiav qhov ruaj khov weld tsim yam ntxwv los ntawm siab precision thiab qis tus nqi; Tsis tas li ntawd, cov qauv raug kaw- lub voj voog tswj lub tshuab tawm tsam kom kov yeej cov kev txwv txog qhov tsis txaus tiag tiag- lub sijhawm teb thiab kev cia siab hnyav rau cov qauv txheej txheem tshwj xeeb. Tus qauv-kev hloov pauv tsis pub dawb-raws li cov yam ntxwv spectral{10}} tau tshwm sim los ua ib qho kev cog lus daws teeb meem rau cov kev cov nyom no, vim nws qhov kev tswj xyuas cov cua sov thiab cov lus teb ceev ceev. Txawm li cas los xij, cov qauv evolutionary ntawm spectral yam ntxwv thiab dynamic teb mechanisms tswj weld nkag thaum lub sij hawm laser vuam ntawm titanium alloys tseem tsis meej. Hais txog qhov sib txawv ntawm kev paub no, txoj kev tshawb fawb no siv cov kev sib txawv -cov kev ntsuas laser vuam sim los ua tus yam ntxwv ntawm microstructure ntawm weld seams thiab cov plasma spectral nta. Raws li cov cim spectral no, ib txoj hauv kev kom muaj nuj nqis hauv online rau kev nkag mus rau vuam yog tsim los tshawb xyuas cov kev sib raug zoo ntawm kev nkag mus rau hauv kev ruaj ntseg, tawg yooj yim, thiab vuam tsis. Tom qab ntawd, ib qho spectrum- tus qauv tsav- tus maub los dawb yog siv los ua kom tau zoo- vuam zoo, thaum cov khoom siv kho tshuab thiab vuam tsim zoo ntawm cov pob qij txha tau raug soj ntsuam zoo. Qhov kev tshawb fawb no muab ob qho tib si theoretical thiab kev sim txhawb nqa rau kev ua tiav ntawm siab -kev ua haujlwm laser vuam rau titanium alloys.
02 Daim Ntawv Qhia Tag Nrho: Daim ntawv no hais txog cov teeb meem tseem ceeb hauv lub tshuab laser vuam ntawm titanium alloys-tshwj xeeb, qhov nyuaj ntawm online melt pas dej tob nrhiav kom pom, qhov cuam tshuam ntawm cov pas dej hauv qhov tob mus rau qhov sib txawv los ntawm qhov sib txawv ntawm cov cua kub dissipation, thiab qhov tsis txaus ntawm cov txheej txheem tswj ib txwm muaj. Siv spectral diagnostics thiab qauv- tswj kev hloov pauv dawb raws li cov txheej txheem tseem ceeb, txoj kev tshawb fawb no tshawb xyuas qhov tshawb pom hauv online thiab kaw- voj tswj ntawm lub pas dej tob tob. Daim ntawv tsim ib qho kev sim platform rau plasma spectrum tau thiab pulsed laser vuam; los ntawm kev sib txawv ntawm ntau yam -kev sim vuam ceev, nws tau txais cov ntaub ntawv sib txuas uas txuas cov cim spectral kom yaj lub pas dej tob. Nws piv qhov ua tau zoo ntawm cov txheej txheem txo qhov loj me-xws li t-SNE thiab UMAP- hauv kev rho tawm cov yam ntxwv thiab tsim lub BP neural network los kwv yees cov pas dej tob tob. Ib txhij, spectral siv piv R3 (Ti I 503.995 nm / Ti I 586.919 nm) raug xaiv raws li tus yam ntxwv parameter; Raws li tus qauv Hammerstein thiab Particle Swarm Optimization, lub cev muaj zog cov yam ntxwv raug txheeb xyuas, thiab tus qauv- tus tswj tsis pub dawb yog tsim los ua kom muaj kev ruaj ntseg ntawm lub pas dej hauv qhov tob. Cov txiaj ntsig tau pom tias cov yam ntxwv spectral ua tiav los ntawm UMAP qhov loj me txo qhov ua tau zoo tshaj qhov kev kwv yees qhov tseeb (R²=0.982), thiab tias qhov sib piv siv spectral R3 nthuav tawm qhov tsis zoo cuam tshuam nrog lub pas dej hauv qhov tob, yog li ua kom muaj tseeb - lub sij hawm tus cwj pwm ntawm qhov tob. Tus tsim MFAC maub los nta lub sij hawm daws teeb meem ceev thiab tsawg heev overshoot; Nyob rau hauv tej yam kev mob ntawm txawv tshav kub dissipation, 87.3% ntawm cov weld seams tuav ib tug ruaj khov yaj pas dej ua ke qhov tob nyob rau hauv lub cheeb tsam ntawm 2.20 ± 0.15 hli, nrog ib tug qauv sib txawv ntawm tsuas yog 0.0986. Qhov kev tshawb fawb no ua tiav qhov kev tshawb pom hauv online thiab kev tswj xyuas ruaj khov ntawm lub pas dej hauv qhov tob hauv laser vuam ntawm titanium alloys, muab cov txheej txheem zoo rau kev tswj xyuas qhov zoo ntawm cov vuam zoo hauv cov khoom siv hauv kev lag luam aerospace.
03 Illustrated Analysis: Daim duab 1 nthuav qhia qhov kev pom ntawm cov ntaub ntawv spectral tau txais thiab cov lej simulation ntawm cov txheej txheem laser welding. Nws qhia txog qhov sib txawv ntawm qhov sib txawv ntawm cov yam ntxwv spectral kab Ti I 503.995 nm ntawm qhov sib txawv ntawm qhov sib txawv, nrog rau kev hloov pauv ntawm qhov kub thiab txias hauv thaj tsam weld nyob rau hauv pulsed laser irradiation. Cov txiaj ntsig tau qhia tias qhov kev siv spectral nthuav tawm qhov kev sib raug zoo uas tsis muaj kev sib raug zoo nrog vuam ceev. Raws li qhov vuam ceev zuj zus, cov cua kub nkag tau txo qis - ua rau txo qis hauv cov ntshav plasma zoo siab - thiab cov kab spectral siv pib poob qis. Txawm li cas los xij, raws li qhov ceev tau nce ntxiv, qhov tob - mus rau - qhov dav qhov sib piv ntawm weld nce; Yog li ntawd, lub teeb liab kis tau tus taw tes hloov los ze zog mus rau lub hauv paus ntawm lub plasma, ua rau lub spectral siv tom qab nce.
Daim duab 2 nthuav qhia cov duab kos duab ntawm cov txheej txheem weld penetration tob extraction. Nws qhia cov txheej txheem siv rau titanium alloy welds tom qab lub tshuab laser vuam -encompassing qhov kev npaj ntawm longitudinal metallographic ntoo khaub lig-sections, grayscale transformation, binarization, thiab ntug extraction-yog li no kom meej meej qhov txawv ntawm lub hauv paus hlau los ntawm lub weld fusion cheeb tsam, tus ciaj ciam ntawm lub boundaries, precisement. tsis siv neeg ntsuas thiab calibration ntawm qhov tob tob qhov tseem ceeb.
Daim duab 2 nthuav qhia cov duab kos duab ntawm cov txheej txheem weld penetration tob extraction. Nws qhia cov txheej txheem siv rau titanium alloy welds tom qab lub tshuab laser vuam -encompassing qhov kev npaj ntawm longitudinal metallographic ntoo khaub lig-sections, grayscale transformation, binarization, thiab ntug extraction-yog li no kom meej meej qhov txawv ntawm lub hauv paus hlau los ntawm lub weld fusion cheeb tsam, tus ciaj ciam ntawm lub boundaries, precisement. tsis siv neeg ntsuas thiab calibration ntawm qhov tob tob qhov tseem ceeb.
Daim duab 3 nthuav tawm ib daim ntawv qhia kev sib txheeb coefficient rau cov ntaub ntawv ua tiav siv cov kev sib txawv, qhia qhov loj ntawm qhov sib txheeb coefficients ntawm qhov tob tob thiab cov yam ntxwv muab rho tawm los ntawm peb txoj kev sib txawv: t-SNE dimensionality txo, UMAP dimensionality txo, thiab spectral siv piv R3. Cov txiaj ntsig tau qhia tias qhov sib piv spectral siv R3 (Ti I 503.995 nm / Ti I 586.919 nm) nthuav tawm qhov kev sib raug zoo tshaj plaws nrog cov yaj qhov tob, ncav cuag tus coefficient ntawm −0.886-kev ua tau zoo dua li ntawm ob txoj kev txo qhov tsis muaj qhov sib npaug {NE, UM} Qhov no qhia tau hais tias qhov spectral siv piv yog qhov rhiab tshaj plaws rau kev hloov pauv hauv qhov tob tob thiab muaj qhov muaj peev xwm ua tau zoo tshaj plaws; yog li, nws ua haujlwm ua haujlwm tseem ceeb rau kev tshawb nrhiav online thiab qauv-dawb yoog tswj ntawm yaj qhov tob.
03 Cov Ntsiab Lus: Hais txog cov teeb meem ntawm qhov sib txawv ntawm lub pas dej hauv qhov tob thiab kev tshawb nrhiav hauv online hauv lub tshuab laser welding ntawm titanium alloys, daim ntawv no tshawb xyuas online melt pool qhov tob nrhiav thiab qauv -kev tswj tsis pub dawb raws li kev kuaj mob spectroscopic. Los ntawm kev tau txais plasma emission spectra thiab sib piv cov yam ntxwv ua tau zoo ntawm cov yam ntxwv tau los ntawm t-SNE thiab UMAP qhov loj me txo tawm tsam spectral siv qhov sib piv, nws tau tshawb pom tias qhov sib piv siv zog R3 (Ti I 503.995 nm / Ti I 586.9bit muaj zog) qhov tob-tshwj xeeb tshaj yog, kev sib txuas coefficient ntawm -0.886- yog li ua kom tus cwj pwm zoo. Raws li qhov tshwj xeeb spectral no, tus qauv-kev hloov pauv hloov pauv dawb tau tsim, siv kev sib xyaw ntawm Hammerstein qauv thiab Particle Swarm Optimization algorithm kom ua tiav qhov kev ua kom zoo dua qub. Ob qho kev simulation thiab kev sim ua kom pom tau tias qhov kev tswj hwm muaj cov lus teb ceev ceev thiab tsawg heev overshoot; Tsis tas li ntawd, txawm tias nyob rau hauv qhov sib txawv ntawm cov cua kub dissipation, nws ua tiav cov dej hauv pas dej ua ke ntawm 87.3% ntawm cov vuam seams nyob rau hauv qhov ruaj khov ntawm 2.20 ± 0.15 hli. Txoj kev tshawb no paub txog qhov tseeb - lub sijhawm saib xyuas thiab kev tswj xyuas ruaj khov ntawm lub pas dej hauv qhov tob hauv titanium alloy laser welding, muab cov kev daws teeb meem zoo rau kev kaw-voj txoj cai ntawm vuam zoo hauv high-end khoom tsim.
