Xaiv cov fasteners hauv cov khoom sib xyaw

Terminological teeb meem, piv txwv ntawm fastener xaiv txoj kev

Yuav ua li cas thiaj txiav txim siab qhov "tsim" fastener hom rau cov khoom siv lossis cov khoom siv sib xyaw thiab cov ntaub ntawv yas?Txhawm rau txheeb xyuas cov ntaub ntawv thiab cov ntsiab lus twg siv tau rau hom fastener, nws yog ib qho tsim nyog yuav tsum nkag siab txog cov ntaub ntawv cuam tshuam, lawv cov txheej txheem tsim, thiab qhov yuav tsum tau muaj kev sib txuas lossis kev sib dhos ua haujlwm.

Siv lub vaj huam sib luag sab hauv ntawm lub dav hlau ua piv txwv.Tsuas piav nws li "aerospace composite material" oversimplifies cov nplua nuj muaj ntaub ntawv thiab txheej txheem.Ib yam li ntawd, lo lus "aviation fasteners" tsis muaj qhov tshwj xeeb ntawm cov ntaub ntawv tsim nyog tshaj plaws rau fasteners thiab lawv cov haujlwm.Fasteners, xws li ntxig studs, rivet studs, deg bonded fasteners, thiab welded fasteners, tej zaum yuav haum rau aerospace kev siv, tab sis muaj qhov sib txawv tseem ceeb ntawm cov ntaub ntawv thiab kev ua haujlwm uas lawv tuaj yeem nruj nrog.

Qhov teeb meem ntawm kev tshawb nrhiav hauv lub ntiaj teb fastener yog yuav ua li cas cais cov khoom fastener, feem ntau yog siv cov ntsiab lus tshwj xeeb ntsig txog fasteners es tsis yog cov ntaub ntawv uas lawv tsim nyog tshaj plaws.Txawm li cas los xij, cov ntsiab lus tshwj xeeb ntawm cov khoom sib xyaw feem ntau muaj qhov tsis sib xws thaum tshawb xyuas cov pawg fastener.Piv txwv li, tsis muaj kev nkag siab ntxaws txog kev sib txuas ntawm qhov chaw los yog ultrasonic vuam hauv kev teeb tsa, koj yuav ua li cas thiaj paub yog tias kev sib txuas ntawm qhov chaw lossis ultrasonic vuam fasteners yog tsim nyog rau kev xaiv cov khoom kub tsim laminated?Yog tias koj lub ntiaj teb yog hais txog cov khoom siv polymer matrix, fiber ntau cov qauv, thiab cov txheej txheem ua haujlwm, koj yuav tshawb nrhiav thiab xaiv li cas hauv lub ntiaj teb uas tham txog cov tswv yim sib dhos, cov lus qhia nruj, nruj qhov kev cia siab, thiab lub hom phiaj preloads?

Hu rau cov neeg xa khoom fastener lossis cov neeg xa khoom rau cov lus qhia thiab kev taw qhia feem ntau yog thawj kauj ruam ua tau zoo thiab ua tiav;Txawm li cas los xij, los ntawm kev nthuav tawm daim ntawv thov hauv txoj hauv kev uas tso cai rau kev tshawb nrhiav yooj yim thiab nrawm ntawm cov kev xaiv cuam tshuam, kev ua kom yooj yim ntxiv tuaj yeem ua tiav.Ntawm no, peb coj cov thermoplastic aircraft sab hauv vaj huam sib luag ua piv txwv los qhia txog qhov tseem ceeb ntawm txoj hauv kev no los txhim kho kev xaiv fastener.

Tightening xav tau
Ua ntej, txhais cov kev cai fastening yog pab tau.Koj puas xav tsim kom muaj qhov sib txuas rau cov ntaub ntawv sib xyaw lossis cov khoom siv yas los npaj rau kev sib dhos tom ntej?Lossis, koj puas xav kho qhov ncaj qha rau cov khoom sib xyaw lossis cov khoom siv yas lossis kho rau lawv?
Rau peb qhov piv txwv, qhov yuav tsum tau ua yog los tsim cov ntsiab lus fastening - tshwj xeeb tshaj yog muab cov ntsiab lus sib txuas ntawm cov khoom sib txuas.Yog li ntawd, peb yuav hloov mus rau thev naus laus zis uas muab txoj hauv kev rau kev txhim kho thiab txuas cov ntsiab lus txuas, tsis yog siv tshuab siv ncaj qha los kho cov khoom ua ke.Nws yog ib qho yooj yim los faib cov txheej txheem fastening siv cov ntsiab lus no, thiab cov ntsiab lus kuj yooj yim, yog li txhua tus tuaj yeem sib txuas lus hauv tib hom lus.

Khoom tswv yim
Cov yam tseem ceeb uas cuam tshuam nrog cov ntaub ntawv cuam tshuam tuaj yeem cuam tshuam rau kev siv ntawm cov fastener hom, tab sis qhov tseeb ntawm cov khoom no feem ntau yog nyob ntawm seb hom fastener tau txiav txim siab.Txhawm rau rhuav tshem lub voj voog no thiab tsis txhob muaj kev sib tham ntau dhau thaum lub sij hawm pom thaum ntxov, peb tuaj yeem txhais cov ntaub ntawv sib xyaw thiab cov ntaub ntawv yas xws li:
Tsis muaj zog polymer.
Discontinuous fiber reinforced polymer cov ntaub ntawv.
Nruam fiber reinforced polymer laminates.
Sandwich khoom.
Cov ntaub ntawv tsis-woven thiab fiber ntau.
Hauv peb qhov piv txwv, cov khoom vaj huam sib luag sab hauv ntawm lub dav hlau yog cov khoom siv fiber ntau txuas ntxiv hauv cov qauv laminated.Los ntawm kev txhais cov ntsiab lus ntawm cov khoom siv hauv txoj kev yooj yim no, peb tuaj yeem tsom mus rau ntau yam kev xav txog cov khoom siv:
Yuav ua li cas fasteners tau koom ua ke rau hauv cov txheej txheem tsim khoom?
Yuav ua li cas cov ntaub ntawv cuam tshuam rau fastening kev koom ua ke los yog installation?

Piv txwv li, kev sib txuas cov fasteners rau hauv cov khoom siv txuas ntxiv ua ntej lossis thaum lub sijhawm kub sib sau tuaj yeem ua rau cov txheej txheem tsis xav tau, xws li txiav lossis hloov cov fibers, uas yuav muaj kev cuam tshuam tsis zoo rau cov khoom siv tshuab.Hauv lwm lo lus, kev txhawb nqa fiber ntau txuas ntxiv tuaj yeem ua rau muaj teeb meem rau kev sib koom ua ke ntawm cov txheej txheem ua tiav, thiab tib neeg yuav xav kom zam dhau cov teeb meem no.
Nyob rau tib lub sijhawm, nws tsuas yog yuav tsum muaj kev nkag siab yooj yim ntawm kev siv tshuab fastening los txiav txim seb nws puas yog siv cov txheej txheem kev teeb tsa lossis kev teeb tsa tom qab.Los ntawm kev yooj yim cov ntaub ntawv thiab fastening terminology, nws yog ib qhov ua tau kom sai thiab yooj yim pom cov ntais ntawv thiab qhov twg tsis phim.Hauv peb qhov piv txwv, kev xaiv cov fasteners yuav tsum tsom mus rau cov txheej txheem tom qab ua tiav, tshwj tsis yog peb xav muab cov fasteners rau hauv cov khoom siv fiber ntau txuas ntxiv / kev tsim khoom.

Cov lus qhia ntxaws
Hauv qhov no, txhawm rau txiav txim siab txog cov txheej txheem fastening, peb yuav tsum tau txhais cov ntsiab lus ntxiv txog lub tswv yim fastening, cov ntaub ntawv koom nrog, thiab txheej txheem tsim.Rau peb qhov piv txwv ntawm kev txuas ntxiv fiber ntau-txhim kho laminates, peb yuav txhais daim ntawv thov raws li hauv qab no:
Daim ntawv thov dav dav yog sab hauv sab panels ntawm aircraft.
Lub tswv yim fastening yog muab ob lub taub hau ntsia liaj qhov rooj nyob rau sab nraum qab ntawm lub vaj huam sib luag (tsis pom) rau kev sib txuas ntawm lub qhov rais qhov rais nrog lub txiv ntseej.
Qhov yuav tsum tau fastening yog qhov muag tsis pom, pom sab nraud threaded txuas taw tes - qhov muag tsis pom txhais tau hais tias kev teeb tsa / fastening los ntawm ib sab ntawm cov khoom - muaj peev xwm tiv taus lub zog rub tawm ntawm kwv yees li 500 Newtons.
Vaj huam sib luag yog cov khoom siv fiber ntau txuas ntxiv thermoplastic, thiab kev teeb tsa ntawm cov fasteners yuav tsum tau nqa tawm tom qab txheej txheem molding kom tsis txhob ua rau cov qauv siv zog.

Ntxiv txheeb cov yam thiab xaiv downwards
Saib ntawm peb tus piv txwv, peb tuaj yeem pib pom tias ntau yam tuaj yeem cuam tshuam peb qhov kev txiav txim siab ntawm hom fastener siv.Cov lus nug yog, qhov twg ntawm cov yam tseem ceeb tshaj plaws, tshwj xeeb tshaj yog tias tus nqi fastener tsis yog qhov kev txiav txim siab nkaus xwb?Hauv peb qhov piv txwv, peb yuav nqaim qhov kev xaiv ntau yam rau saum npoo sib khi fasteners lossis ultrasonic welded fasteners.
Ntawm no, txawm tias cov ntaub ntawv thov yooj yim tuaj yeem pab tau.Piv txwv li, paub tias peb tab tom siv cov ntaub ntawv thermoplastic pab peb teeb tsa qhov kev cia siab ntawm kev ua tau zoo.Xav txog qhov muaj cov adhesives kev tshaj lij thiab cov thev naus laus zis kho saum npoo, peb tuaj yeem cia siab tias cov tshuab ua haujlwm ntawm ob lub thev naus laus zis mus txog qib tsim nyog.
Txawm li cas los xij, vim peb paub tias daim ntawv thov yog nyob rau hauv aerospace, kev sib txuas ntawm cov khoom siv sib txuas tuaj yeem muab kev lees paub kev ua haujlwm yooj yim thiab cov ntawv pov thawj txoj hauv kev.Adhesive siv sij hawm los kho, thaum ultrasonic installation tuaj yeem thauj khoom tam sim ntawd, yog li peb yuav tsum xav txog qhov cuam tshuam ntawm cov txheej txheem sijhawm.Kev txwv kev nkag mus kuj tseem yog qhov tseem ceeb.Txawm hais tias cov vaj huam sib luag sab hauv feem ntau yooj yim muab rau kev teeb tsa nrog cov nplaum tsis siv neeg lossis cov tshuab ultrasonic, lawv yuav tsum tau ua tib zoo tshuaj xyuas ua ntej xaiv zaum kawg.

Ua qhov kev txiav txim zaum kawg
Nws yog tsis yooj yim sua kom txiav txim siab raws li txoj kev sib txuas kev txheeb xyuas thiab lub sij hawm tas;Qhov kev txiav txim zaum kawg yuav nyob ntawm qhov kev txiav txim siab ntawm cov cuab yeej siv peev, kev ua haujlwm zoo thiab ua haujlwm ntev, tag nrho cov txheej txheem cuam tshuam rau lub sijhawm, kev txwv tsis pub nkag, thiab cov tswv yim pom zoo lossis ntawv pov thawj.Tsis tas li ntawd, kev tsim, kev tsim khoom, thiab kev ua haujlwm sib dhos tuaj yeem koom nrog cov neeg koom nrog sib txawv, yog li qhov kev txiav txim siab zaum kawg yuav tsum muaj lawv txoj kev koom tes.Tsis tas li ntawd, ua qhov kev txiav txim siab no yuav tsum tau txiav txim siab tag nrho cov txiaj ntsig, suav nrog kev tsim khoom thiab tag nrho cov nqi ntawm cov tswv cuab (TCO - tag nrho cov nqi ntawm cov tswv).Los ntawm kev ua tib zoo saib ntawm cov teeb meem fastening thiab xav txog txhua yam tseem ceeb thaum lub sij hawm pib tsim, txheej txheem tsim khoom, thiab kev sib dhos zaum kawg, kev tsim khoom thiab TCO tuaj yeem suav tau thiab cuam tshuam zoo.Cov no yog ib lub hauv paus ntsiab lus tseem ceeb ntawm Bossard sib sau ua ke thev naus laus zis thev naus laus zis portal, txhawm rau pab cov tib neeg kom tau txais kev paub txog kev sib sau ua ke.
Thaum kawg, qhov kev txiav txim siab uas nruj lub tswv yim lossis cov khoom siv yog nyob ntawm ntau yam - tsis muaj ib qho me me haum rau txhua qhov kev daws teeb meem, thiab muaj ntau ntau yam kev xaiv los txiav txim siab.Txawm li cas los xij, raws li peb tau hais los saum toj no, txawm tias txhais cov ntsiab lus ntawm daim ntawv thov hauv ib txoj hauv kev yooj yim tuaj yeem ua kom yooj yim rau cov txheej txheem xaiv, qhia txog cov kev txiav txim siab muaj feem cuam tshuam, thiab txheeb xyuas cov cheeb tsam uas yuav xav tau cov neeg koom nrog cov tswv yim.