3D Printed Titanium Structure Qhia Supernatural Strength
Lub 3D luam tawm 'metamaterial' boasting qib ntawm lub zog rau qhov hnyav uas ib txwm tsis pom hauv qhov xwm txheej lossis kev tsim khoom tuaj yeem hloov pauv peb ua txhua yam los ntawm kev kho mob cog rau hauv dav hlau lossis foob pob hluav taws.
Kev kawm coj Jordan Noronha tuav lub titanium lattice lub voos xwmfab. Duab Credit: RMIT University
RMIT University cov kws tshawb fawb tau tsim cov khoom siv tshiab - ib lo lus siv los piav txog cov khoom siv dag zog nrog cov khoom tshwj xeeb uas tsis tau pom nyob rau hauv cov xwm txheej - los ntawm cov titanium alloy.
Tab sis nws yog cov khoom siv tshwj xeeb lattice qauv tsim, tsis ntev los no tau tshaj tawm hauv phau ntawv xov xwm Advanced Materials, uas ua rau nws muaj dab tsi tab sis ntau: kev ntsuam xyuas pom tias nws yog 50% muaj zog dua li cov hlau nplaum uas muaj zog tshaj plaws ntawm qhov sib xws siv hauv kev siv aerospace.
Txhim kho Nature's Design
Lattice cov qauv ua los ntawm cov hollow struts yog Ameslikas tshwm sim los ntawm qhov xwm txheej: muaj zog hollow-stemmed nroj tsuag zoo li Victoria dej lily los yog lub cev hardy organ yeeb nkab coral (Tubipora musica) qhia peb txoj kev los ua ke lightness thiab lub zog.
Txawm li cas los xij, raws li RMIT Tus Kws Tshaj Lij Tshaj Lij Tshaj Lij Ma Qian piav qhia, ntau xyoo ntawm kev sim rov ua cov hollow 'cellular structures' hauv cov hlau tau ntxhov siab los ntawm cov teeb meem ntawm kev tsim khoom thiab kev ntxhov siab rau hauv cov cheeb tsam sab hauv ntawm cov hollow struts, ua rau ua tsis tiav ntxov ntxov.
"Qhov zoo tshaj plaws, kev ntxhov siab hauv txhua cov ntaub ntawv ntawm tes yuav tsum sib npaug sib npaug," Qian piav qhia.
"Txawm li cas los xij, rau feem ntau topologies, nws yog qhov muaj tsawg dua li ib nrab ntawm cov khoom siv los ua lub luag haujlwm hnyav, thaum lub ntim loj ntawm cov khoom yog qhov tsis tseem ceeb."
Hlau 3D luam ntawv muab cov kev daws teeb meem tshiab uas tsis tau muaj dhau los rau cov teeb meem no.
Los ntawm kev thawb lub 3D luam ntawv tsim rau nws cov kev txwv, RMIT pab pawg tau txhim kho hom tshiab ntawm cov kab laum kom faib cov kev ntxhov siab ntau dua, txhim kho nws lub zog lossis kev ua haujlwm zoo.
"Peb tsim ib lub hollow tubular lattice qauv uas muaj ib tug nyias band khiav nyob rau hauv nws. Ob lub ntsiab ua ke qhia lub zog thiab lightness yeej tsis tau pom ua ntej ua ke nyob rau hauv cov xwm," Qian hais.
"Los ntawm kev sib koom ua ke ob lub lattice sib txuas ua ke kom sib npaug sib faib kev ntxhov siab, peb zam cov ntsiab lus tsis muaj zog uas muaj kev ntxhov siab ib txwm muaj."
Laser-powered zog
Pab neeg 3D luam tawm cov qauv tsim no ntawm RMIT's Advanced Manufacturing Precinct siv cov txheej txheem hu ua laser hmoov txaj fusion, qhov twg cov txheej ntawm cov hmoov hlau yog melted rau hauv qhov chaw uas siv lub zog laser beam.
Kev ntsuam xyuas pom cov qauv luam tawm - titanium lattice lub voos xwmfab - yog 50% muaj zog dua li cam khwb cia magnesium alloy WE54, cov alloy muaj zog tshaj plaws ntawm qhov sib xws siv hauv kev siv dav hlau. Cov qauv tshiab tau ua tau zoo ib nrab ntawm cov kev ntxhov siab nyob rau hauv lub lattice cov ntsiab lus tsis muaj zog.
Kev tsim ob chav lattice kuj txhais tau hais tias tej kab nrib pleb yog deflected raws tus qauv, ntxiv dag zog rau lub toughness.
Kev tshawb fawb tus thawj coj thiab RMIT PhD tus neeg sib tw Jordan Noronha tau hais tias lawv tuaj yeem ua cov qauv no ntawm qhov ntsuas ntawm ob peb millimeters lossis ob peb metres loj siv ntau hom tshuab luam ntawv.
Qhov kev luam tawm no, nrog rau lub zog, biocompatibility, corrosion, thiab kub tsis kam ua rau nws yog ib tus neeg sib tw zoo rau ntau daim ntawv thov los ntawm cov khoom siv kho mob xws li cov pob txha cog rau cov dav hlau lossis cov foob pob hluav taws.
"Piv nrog cov muaj zog tshaj plaws cam khwb cia magnesium alloy tam sim no siv nyob rau hauv kev lag luam daim ntawv thov uas yuav tsum tau muaj zog thiab lub teeb yuag, peb titanium metamaterial nrog ib tug sib piv ceev tau pom tias yuav muaj zog npaum li cas los yog tsawg raug rau mus tas li cov duab hloov nyob rau hauv compressive loading, tsis txhob hais ntau ua tau rau. tsim, "Noronha hais.
Pab neeg no npaj yuav ua kom zoo dua cov khoom siv kom ua tau zoo tshaj plaws thiab tshawb nrhiav cov ntawv thov hauv qhov chaw kub siab dua.
Thaum tam sim no tiv taus kub txog li 350 degree, lawv ntseeg tias nws tuaj yeem tiv taus qhov kub txog li 600 degree siv cov cua sov-resistant titanium alloys ntau dua, rau kev siv hauv aerospace lossis tua hluav taws drones.
Raws li thev naus laus zis los ua cov khoom siv tshiab no tseem tsis tau muaj dav, nws txoj kev siv los ntawm kev lag luam yuav siv sij hawm me ntsis.
"Cov txheej txheem tsim khoom qub tsis yog qhov ua tau zoo rau kev tsim cov khoom siv hlau tsis zoo no, thiab tsis yog txhua tus muaj lub tshuab laser hmoov txaj fusion tshuab hauv lawv lub tsev rau khoom," nws hais.
"Txawm li cas los xij, raws li cov thev naus laus zis tsim, nws yuav nkag mus tau ntau dua thiab cov txheej txheem luam ntawv yuav nrawm dua, ua rau cov neeg tuaj saib loj dua los siv peb cov khoom siv high-strength multi-topology metamaterials hauv lawv cov khoom. rau kev siv tiag tiag."
Technical Director ntawm RMIT's Advanced Manufacturing Precinct, Distinguished Professor Milan Brandt, tau hais tias pab pawg tau txais tos cov tuam txhab xav koom tes nrog ntau daim ntawv thov.
"Peb txoj hauv kev yog txhawm rau txheeb xyuas cov teeb meem thiab tsim cov hauv kev los ntawm kev sib koom tes tsim, kev sib pauv kev paub, kev kawm ua haujlwm, kev daws teeb meem tseem ceeb, thiab kev txhais lus ntawm kev tshawb fawb," nws hais.
