Cov khoom siv lub cev ntawm cov ntaub ntawv sib xyaw ua ke yog cov fibers. Qhov no txhais tau tias thaum cov resin thiab cov fibers sib xyaw ua ke, lawv cov khoom zoo ib yam li cov ntawm cov fibers ib leeg. Cov ntaub ntawv sim qhia tau tias cov ntaub ntawv fiber-reinforced yog cov khoom uas nqa feem ntau ntawm cov khoom thauj. Yog li ntawd, kev xaiv ntaub yog qhov tseem ceeb thaum tsim cov qauv sib xyaw.
Pib cov txheej txheem los ntawm kev txiav txim siab hom kev txhawb nqa uas xav tau hauv koj qhov project. Cov chaw tsim khoom feem ntau tuaj yeem xaiv los ntawm peb cov ntaub ntawv txhawb nqa: iav fiber, carbon fiber thiab Kevlar® (aramid fiber). Cov iav fiber feem ntau yog qhov kev xaiv dav dav, thaum cov carbon fiber muaj kev ruaj khov siab thiab Kevlar® muaj kev tiv thaiv kev sib txhuam siab. Nco ntsoov tias cov ntaub tuaj yeem sib xyaw ua ke hauv laminates los tsim cov pawg sib xyaw nrog cov txiaj ntsig ntawm ntau dua ib yam khoom.
Thaum koj tau txiav txim siab txog cov ntaub, xaiv qhov hnyav thiab hom ntaub uas haum rau koj txoj haujlwm xav tau. Qhov sib dua ntawm cov ntaub, qhov yooj yim dua rau kev dai rau ntawm cov chaw uas muaj cov duab zoo nkauj. Qhov sib dua kuj siv cov resin tsawg dua, yog li cov laminate tag nrho tseem sib dua. Thaum cov ntaub hnyav dua, lawv tsis yooj ywm. Qhov hnyav nruab nrab khaws qhov yooj ywm txaus los npog feem ntau cov duab, thiab lawv pab txhawb rau lub zog ntawm qhov. Lawv pheej yig heev thiab tsim cov khoom muaj zog thiab sib dua rau kev siv tsheb, marine thiab kev lag luam. Braided rovings yog cov khoom siv hnyav uas feem ntau siv hauv kev tsim nkoj thiab kev ua pwm.
Txoj kev uas ib daim ntaub raug xov yog suav tias yog nws tus qauv lossis tus qauv. Xaiv los ntawm peb hom ntaub uas feem ntau siv: tiaj tiaj, satin thiab twill. Cov qauv ntaub tiaj tiaj yog qhov pheej yig tshaj plaws thiab tsis yooj ywm tshaj plaws, tab sis lawv tuav ua ke zoo thaum txiav. Kev sib tshuam ntawm cov xov mus rau saum/hauv qab ntau zaus ua rau lub zog ntawm cov ntaub tiaj tiaj txo qis, txawm hais tias lawv tseem txaus rau txhua yam tshwj tsis yog cov ntawv thov kev ua tau zoo tshaj plaws.
Cov xov satin thiab twill yog cov mos dua thiab muaj zog dua li cov xov tiaj tiaj. Hauv cov xov satin, ib txoj xov weft ntab hla peb mus rau xya lwm cov xov warp thiab tom qab ntawd xaws rau hauv qab lwm qhov. Hauv hom xov xoob no, cov xov khiav ntev dua, tswj lub zog theoretical ntawm cov fiber. Ib txoj xov twill muab kev sib haum xeeb ntawm satin thiab cov qauv tiaj tiaj, nrog rau cov nyhuv herringbone embellishment feem ntau xav tau.
Lub Tswv Yim Txog Kev Siv Tshuab: Yuav kom daim ntaub yooj ywm dua, txiav nws ntawm lub yob ntawm lub kaum sab xis 45-degree. Thaum txiav li no, txawm tias cov ntaub ntxhib tshaj plaws kuj zoo dua rau saum daim duab.
Kev Txhawb Nqa Fiberglass
Fiberglass yog lub hauv paus ntawm kev lag luam composites. Nws tau siv rau hauv ntau daim ntawv thov composite txij li xyoo 1950 thiab nws cov khoom siv lub cev tau nkag siab zoo. Fiberglass yog lub teeb yuag, muaj lub zog tensile thiab compressive nruab nrab, tuaj yeem tiv taus kev puas tsuaj thiab cyclic loads, thiab yooj yim rau kev tuav.
Fiberglass yog cov khoom siv sib xyaw ua ke uas siv ntau tshaj plaws. Qhov no feem ntau yog vim nws tus nqi qis thiab cov khoom siv lub cev nruab nrab. Fiberglass zoo heev rau cov haujlwm txhua hnub thiab cov khoom uas tsis xav tau ntau cov ntaub fiber ntxiv lub zog thiab kev ruaj khov.
Yuav kom ua kom lub zog ntawm fiberglass zoo tshaj plaws, nws siv tau nrog epoxy thiab kho tau siv cov txheej txheem lamination txheem. Nws zoo tagnrho rau kev siv hauv kev lag luam tsheb, nkoj, kev tsim kho, tshuaj lom neeg thiab kev lag luam dav hlau, thiab feem ntau siv rau hauv cov khoom siv kis las.
Kevlar® Kev Txhawb Nqa
Kevlar® yog ib qho ntawm thawj cov xov paj hluavtaws uas muaj zog heev uas tau txais kev lees paub hauv kev lag luam yas uas muaj fiber ntau (FRP). Qib Kevlar® sib xyaw yog lub teeb yuag, muaj lub zog tensile zoo heev, thiab suav tias yog qhov cuam tshuam thiab tiv taus kev sib txhuam. Cov ntawv thov feem ntau suav nrog lub cev sib dua xws li kayaks thiab canoes, cov vaj huam sib luag fuselage dav hlau thiab cov hlab siab, cov hnab looj tes tiv taus kev txiav, cov cuab yeej tiv thaiv lub cev, thiab ntau ntxiv. Kevlar® siv nrog epoxy lossis vinyl ester resins.
Kev Txhawb Nqa Carbon Fiber
Cov roj carbon fiber muaj ntau tshaj 90% carbon thiab muaj lub zog tensile siab tshaj plaws hauv kev lag luam FRP. Qhov tseeb, nws kuj muaj lub zog compressive thiab flexural siab tshaj plaws hauv kev lag luam. Tom qab ua tiav, cov fibers no sib xyaw ua ke los tsim cov roj carbon fiber reinforcements xws li cov ntaub, tows, thiab ntau ntxiv. Cov roj carbon fiber reinforcement muab lub zog tshwj xeeb thiab kev tawv, thiab nws feem ntau kim dua li lwm cov fiber reinforcements.
Yuav kom ua kom cov carbon fiber muaj zog tshaj plaws, nws yuav tsum tau siv nrog epoxy thiab tuaj yeem kho tau siv cov txheej txheem lamination txheem. Nws yog qhov zoo tagnrho rau kev siv hauv tsheb, marine thiab aerospace, thiab feem ntau siv rau hauv cov khoom siv kis las.
Lub sijhawm tshaj tawm: Lub Xya Hli-19-2022
