Nyob rau plaub lub xyoos dhau los, pawg neeg tshawb fawb Montana State University tau tsim ib txoj hauv kev tsim cov pa roj carbon fiber ntau uas siv txoj kev Stretch Break, raws li daim ntawv tshaj tawm Kaum Ob Hlis 5 los ntawm Composites World. Cov pa roj carbon fiber ntau no yooj yim dua los tswj cov molding ntawm cov dav hlau cov duab thiab tuaj yeem txo cov nqi tsim khoom. Txoj haujlwm no tau txais nyiaj los ntawm Asmeskas Tub Rog nrog kev nqis peev ntawm $ 25.8 lab.
Montana State University hais tias cov kws tshawb fawb tau nqis peev ntau hauv cov haujlwm tseem ceeb ntawm kev tshawb fawb thiab tam sim no mus txog qhov tseem ceeb. Cov kws tshawb fawb tau npaj kom siv tau cov peev txheej tsim khoom me me ua ntej ua tiav kev lag luam thev naus laus zis. Cov pa roj carbon fiber ntau yog siv dav hauv aerospace vim nws lub zog siab, lub teeb yuag thiab kav ntev. Tab sis cov fibers no tsis yooj yim khoov, yog li ua kom nruj nruj uas haum txig rau hauv lub dav hlau tis yuav tsum muaj cov cuab yeej tsim khoom siv thiab cov khoom siv kim heev thiab feem ntau cov qauv hlau yog cov pab txhawb nqa, uas ua rau cov tub rog Asmeskas raug nqi ntau lab daus las hauv ib xyoos los tswj thiab kho. Hauv qhov sib piv, cov ntaub ntawv carbon fiber tshiab -- tsim los ntawm Montana State University -- feem ntau yog ua los ntawm cov ntaub ntawv stretched, uas qee cov fibers tau tawg ntawm cov ntsiab lus tsis muaj zog. Cov kev tshawb fawb tau pom tias 'stretching thiab tawg' carbon fiber tuaj yeem tsim los ntawm kwv yees li 8 npaug ntau dua nrog kwv yees li tib qhov kev siv. Qhov no txhais tau hais tias cov ntaub ntawv tuaj yeem molded siv cov cuab yeej siv yooj yim yam tsis muaj kev pab ntawm cov qauv hlau. Vim tias cov fiber ntau yooj yim rau kev tsim, cov neeg saib xyuas cia siab tias yuav txo cov nqi tsim khoom los ntawm ib lub hlis twg, cov kws tshawb fawb tau hais. Txawm hais tias lub tswv yim ntawm kev txhim kho lub shapeability ntawm carbon fiber los ntawm kev puas tsuaj ntawm cov qauv muajmuaj nyob rau ntau xyoo lawm, qee qhov kev siv yav dhau los (xws li cov ntaub ntawv txiav random, thiab lwm yam) tau ua pov thawj tias siv. Nws yuav txo tau lub zog ntawm cov khoom. Lub tswv yim ntawm tensile fracture tsis yog ib qho kev tsim kho tshiab tsis ntev los no, tab sis txog tam sim no tseem tsis tau muaj txoj hauv kev zoo thiab ua tau zoo rub pob txha hauv txoj hauv kev uas tuaj yeem txuas ntxiv mus rau kev tsim khoom lag luam. Nws tuaj yeem hais tias lub tswvyim ntawm 'stretching thiabtawg ' carbon fiber suab yooj yim, tab sis nyuaj heev los tswj.
Pab pawg tshawb fawb Montana State University tau koom tes nrog ntau dua 20 lub tuam txhab los ntawm Montana los tsim thiab ua cov cuab yeej tensile tawg tshiab hu ua Bobcat Head. Thaum lub tiaj tus nqaj hlau uas muaj ntau txhiab carbon fiber monofilaments kis tau sai heev los ntawm ib tug series ntawm chais, precision quab yuam yog siv los rhuav tshem cov fibers tsis zoo. Cov kws tshawb fawb tau sau tseg tias tsuas yog kwv yees li 2 feem pua ntawm fiber ntau so tau ua nyob rau hauv ib qho kev muab. Tom qab ntawd, cov kws tshawb fawb tau soj ntsuam cov khoom ntawm cov khoom tau txais, khoov cov fibers tom qab "stretching thiab breaking" mus rau hauv complex duab thiab kho lawv nrog resins, tsom rau kev sim seb nws nyuaj npaum li cas los tsim. Kev sim tau ua pov thawj tias cov fiber ntau muaj tib yam khoom siv raws li cov khoom ua los ntawm cov fibers txuas ntxiv, tab sis yooj yim dua rau kev tsim. Tom ntej no, cov kws tshawb fawb tau npaj los ntsuas qhov kev tsim cov khoom siv "stretch-break" kev tsim khoom, tso tawm cov ntawv thov ua qauv qhia kom siv tau nws lub peev xwm los siv hauv kev tsim khoom tiag. Qhov no yuav tso lub hauv paus rau kev tso cai rau cov tuam txhab aerospace uas tsim cov tub rog thiab pej xeem dav hlau. Cov kws tshawb fawb hais tias lawv ntseeg tias cov khoom yuav tsum tau pib siv hauv kev lag luam ob peb xyoos tom ntej no. Tam sim no, qhov kev zov me nyuam tau ntes lub qhov muag ntawm cov khoom siv qib siab thiab cov chaw tsim khoom siv dav hlau, thiab cov kws tshawb fawb thiab cov kws tshaj lij tau tuaj rau Montana State University kom pom cov ntaub ntawv ntawm tus kheej thiab xav tau cov qauv ntawm cov ntaub ntawv muab los ntawm pab pawg tshawb fawb. Ob lub tuam txhab aerospace thiab cov khoom lag luam tau pom muaj kev txaus siab rau kev tshawb fawb thiab ntseeg tias thaum muaj xwm txheej rau kev siv, nws yuav muaj kev cuam tshuam loj rau kev tsim khoom siv dav hlau, cov kws tshawb fawb tau hais.
**Nqe Lus Nug: Qee cov ntawv thiab cov duab luam tawm hauv tus account pej xeem no yog los ntawm Is Taws Nem thiab tsuas yog siv rau kev sib pauv thiab sib koom ntawm cov kws tshaj lij thiab cov ntaub ntawv lag luam, tsis yog rau kev lag luam. Thov qhia lub hauv paus rau kev luam tawm dua. Yog tias ib tus neeg lossis lub koom haum muaj kev tsis ntseeg txog qhov tseeb lossis qhov tseeb ntawm txoj cai ntawm tsab xov xwm lossis nws cov ntsiab lus, thov hu rau peb sai li sai tau. Peb yuav saib xyuas nws raws sijhawm.
