Carbon Fiber Composites Txheej Txheem Qhia
Carbon Fiber Composites: Kev Qhia Qhia
Kev ua cov pa roj carbon fiber ntau (CF) cov khoom sib xyaw yog kev lag luam tsis yooj yim, xav txog cov engineers feem ntau xav txog kev tsim lossis tsim los ntawm keeb kwm ntawm kev tsim cov khoom siv hlau.nws tau raug hu ua dub txhuas, thiab nws tsim thiab fabrication tau piav raws li cov kos duab dub.Nws yog dab tsi, tiag tiag?
Lub hom phiaj ntawm phau ntawv tsim qauv no yog muab cov ntaub ntawv dav dav thiab cov lus qhia tshwj xeeb ntawm cov khoom siv carbon fiber ntau thiab qee cov lus qhia rau kev tsim cov khoom hnyav hnyav nrog cov khoom siv fiber ntau.
Vim li cas Carbon Fiber
Cov pa roj carbon fiber ntau muaj cov khoom siv tshwj xeeb piv rau homogenous hlau thiab yas.Cov khoom muaj zog, tawv, thiab lub teeb yuag.Cov khoom sib xyaw no yog cov khoom ntawm kev xaiv rau cov ntawv thov uas lub teeb yuag & kev ua tau zoo yog qhov tseem ceeb, xws li cov khoom siv rau lub dav hlau, cov dav hlau sib tw, thiab cov tsheb sib tw.
Dab tsi yog Carbon Fiber Composites
Cov ntaub ntawv sib xyaw yog tsim los ntawm kev sib xyaw ua ke (fiber) nrog matrix (resin), thiab qhov kev sib xyaw ntawm fiber ntau thiab matrix muab cov yam ntxwv zoo dua rau cov khoom siv ib leeg.Hauv cov khoom siv sib xyaw, cov fiber ntau nqa feem ntau ntawm cov khoom thauj thiab yog qhov tseem ceeb hauv cov khoom siv.Cov resin pab hloov cov load ntawm fibers, tiv thaiv cov fibers los ntawm buckling, thiab khi cov ntaub ntawv ua ke.
Tus nqi npaum li cas?
Keeb kwm, carbon fiber composites tau kim heev, uas tau txwv nws siv rau cov ntawv tshwj xeeb nkaus xwb.Txawm li cas los xij, dhau kaum xya xyoo dhau los, raws li kev noj haus tau nce thiab automation hauv kev tsim cov txheej txheem tau nce, tus nqi ntawm carbon fiber composites tau poob qis.Qhov sib xyaw ua ke tau ua rau tus nqi tag nrho ntawm cov khoom siv high-end aluminium.Niaj hnub no, carbon fiber composites yog kev lag luam nyob rau hauv ntau yam kev siv xws li cov khoom ua si, kev ua haujlwm nkoj, kev ua haujlwm tsheb, thiab cov tshuab ua haujlwm siab.
Daim ntawv thov
Composite cov ntaub ntawv yog heev ntau yam.Tus engineer tuaj yeem xaiv los ntawm ntau yam fibers thiab resins kom tau txais cov khoom siv uas xav tau.Tsis tas li ntawd, cov khoom tuab thiab cov kev taw qhia fiber ntau tuaj yeem ua kom zoo rau txhua daim ntawv thov.
Qhov zoo ntawm carbon fiber composites yog:
1.High Specific Striffness (nqaj muab faib los ntawm qhov ceev)
2.High tshwj xeeb lub zog (lub zog muab faib los ntawm ntom)
3. Tsis tshua muaj coefficient ntawm thermal expansion (CTE)
4.X-ray pob tshab (vim nws qhov hnyav molecular)
Hauv cov ntawv thov twg yog carbon fiber ntau siv?
Qhov chaw tshwj xeeb ntawm cov pa roj carbon fiber ntau nrog lub zog tshwj xeeb, nruj, thiab qis CTE muab lawv qhov chaw tshwj xeeb hauv ntau qhov chaw thov raws li qhia hauv qab no:
Cov ntawv thov rau carbon fiber composites
Cov ntaub ntawv tsim
Carbon Fiber composites raug suav hais tias yog "tus tsim cov khoom siv" vim hais tias cov khoom tuaj yeem raug kho kom muaj zog thiab tawv nqaij ntawm cov lus qhia thiab qhov chaw uas tsim nyog.Qhov no yog ua tiav los ntawm kev tsim cov khoom siv thiab kev taw qhia fiber ntau kom haum raws li qhov yuav tsum tau ua.Tsis tas li ntawd, kev tsim thiab kev tsim khoom yooj yim uas cov pa roj carbon fiber ntau muab lub sijhawm los txhim kho kev tsim qauv, xws li sib sau ua ke thiab sib koom ua ke ntau yam hauv-situ, kom txo qis tag nrho cov nqi.
Tooling
Pwm yog siv los txhais cov duab ntawm cov khoom sib xyaw.Qhov sib xyaw ua ke yuav khaws tag nrho cov duab thiab cov yam ntxwv ntawm cov pwm;yog li ntawd qhov zoo ntawm ib feem yog hnyav heev los ntawm qhov zoo ntawm cov pwm.Cov pwm tuaj yeem yog txiv neej lossis poj niam.Cov poj niam pwm yog cov feem ntau thiab lawv yuav tsim ib feem nrog ib tug du sab nrauv nto thaum ib tug txiv neej pwm yuav tsim ib tug du nto.Yuav tsum muaj pwm sib txuam (txiv neej thiab poj niam) yog tias qhov sib koom ua ke siv xovxwm.
Ob qhov cuab yeej, feem ntau hu ua "clamshell"
Cov pwm tuaj yeem ua nrog cov ntaub ntawv sib xyaw, cov hlau uas muaj epoxy lossis machined los ntawm txhuas lossis hlau.Hom pwm thiab cov ntaub ntawv siv yog nyob ntawm seb hom thiab qhov ntau npaum li cas.
Kev tsim khoom
Advanced carbon fiber ntau lawm feem ntau yog siv cov pre-impregnated carbon fiber nrog thermoset resins.Ob txoj kev siv tseem ceeb yog:
1. Tes layup
Lub tes layup ntawm pre-impregnated woven cov ntaub ntawv tseem yog ib tug loj ib feem ntawm kev tsim kev lag luam, yuav tsum muaj kev txawj ntse thiab kev paub ntawm ib tug tib neeg cov neeg ua hauj lwm los tsim lub tiaj tus plies rau hauv complex duab.Nws muaj peev xwm ua tau qhov kev ua tau zoo thiab qhov nyuaj tab sis tuaj yeem ua tus txheej txheem kim thiab sib txawv heev.
2. Automated Fiber Placement (AFP)
Cov khoom tseem ceeb uas yuav tsum tau xav txog yog qhov dav ntawm fiber ntau koj siv thiab lub compaction roller radius.
