1, Fasteners siv nrog composite laminates
Ntau lub tuam txhab tsim tshwj xeeb fasteners rau cov qauv sib xyaw. Ntau hom fasteners feem ntau yog siv: threaded fasteners, locking bolts, dig muag bolts, dig muag rivets thiab tshwj xeeb fasteners rau cov qauv mos xws li honeycomb panels. Qhov sib txawv tseem ceeb ntawm fasteners rau cov hlau thiab cov khoom sib xyaw yog cov khoom siv, txoj kab uas hla ntawm cov txiv ntoo thiab cov txiv ntoo.
2, Kev tiv thaiv corrosion
Thaum siv nrog cov ntaub ntawv fastener feem ntau, tsis yog iav fiber ntau los yog Kevlar reinforced composites ua rau muaj teeb meem corrosion. Txawm li cas los xij, carbon fiber reinforced composites yog qhov tsis zoo thaum siv nrog cov ntaub ntawv xws li txhuas lossis cadmium, uas yog cov txheej txheem siv los tiv thaiv kev tiv thaiv corrosion.
3, Fastener cov ntaub ntawv
Titanium alloy Ti-6Al-4V yog feem ntau alloy siv rau fasteners hauv carbon fiber reinforced composite lug. Austenitic stainless hlau, kub kub alloys (xws li A286), multiphase alloys (xws li MP35N los MP159) thiab npib tsib xee alloys (xws li Alloy 718) kuj zoo nkaus li sib xws nrog carbon fiber composites.
4, Fastener Systems rau Sandwich Honeycomb Structures
IV. Fastener Systems rau Sandwich Honeycomb Structures
Adjustable Support Preload (ASP) fastening systems muab ib txoj kev yooj yim ntawm fastening composites, mos cores, hlau los yog lwm yam ntaub ntawv uas rhiab heev rau fastener clamping los yog installation quab yuam tej yam kev mob. Lub xauv quab yuam yog infinitely adjustable nyob rau hauv lub siab tshaj plaws torque txwv txwv tsis pub ntxiv loading thaum lub sij hawm installation ntawm lub xauv hoop. Cov fasteners muaj nyob rau hauv ob hom. Asp® muaj tag nrho shank thiab 2Asp® muaj ib hom pilot shank. Asp® muaj tag nrho shank thiab 2Asp® muaj ib hom tsav tsheb raws li qhia hauv daim duab 76 thiab daim duab 77.
Daim duab 76: ASP Fastener System
Daim duab 77: ASP Fastener System Installation Sequence
5, nyob zoo-Lok® thiab Huck-Spin® Locking Bolt Fasteners
Feem ntau cov qauv sib xyaw ua ke siv hauv kev lag luam dav hlau tau txuas nrog Hi-Loks® (Hi-Shear Corp.) lossis Huck- Spin® locking bolt fasteners rau kev txhim kho mus tas li.Hi-Lok® yog cov xov txuas txuas uas suav nrog tus yuam sij allen ntawm lub threaded kawg rau cov lus teb rau lub sij hawm installation. Lub splice band muaj xws li frangible seem uas cais ntawm tus nqi torque predetermined. Raws li pom hauv daim duab 78.
Daim duab 78: Nyob zoo-Lok® installation
Qhov no locking bolt muaj ib tug locking hoop uas yog nias rau hauv lub nplhaib zawj. Nws muaj nyob rau hauv ob hom: Pull type thiab Stake type. Lub rub hom yog qhov ntau tshaj plaws, nyob rau hauv uas ib tug fragile tus Tsov tus tw yog siv los teb rau lub axial load ntawm lub xauv hoop forging. Thaum lub forging load mus txog qhov txwv tsis pub dhau, qhov ntxeev ntawm tus pin dislodges ntawm qhov chaw txaus ntshai.Installation ntawm Hi-Lok® thiab rub-hom Huck-Spin® lockbolts tuaj yeem ua los ntawm tus kws tshaj lij ntawm ib sab ntawm cov qauv. Ntawm qhov tod tes, staked locking bolts xav tau kev txhawb nqa ntawm ib sab ntawm lub taub hau fastener los tiv thaiv kev ua haujlwm ntawm compression molding. Txoj kev no feem ntau yog siv rau kev sib sau ua ke ntawm cov qauv nthuav dav uas qhov sib txuas tsis yog qhov teeb meem.
Qhov sib txawv tshwj xeeb hauv fasteners rau cov qauv sib xyaw yog tsawg heev piv rau cov qauv hlau. Nrog Hi-Lok®, cov ntaub ntawv sib raug zoo yog qhov teeb meem nkaus xwb; lub tes tsho aluminium tsis pom zoo. Tus qauv dab tshos feem ntau yog A286, 303 stainless hlau thiab titanium alloys.Huck-Spin® locking pins xav tau lub hau-zoo li tus ntes uas muaj flange los faib cov kabmob siab thaum lub sijhawm teeb tsa. Locking spigot pins tsim rau kev tsim vaj tse muaj rau lub nplhaib grooves, thaum hlau tsim muaj tsib. Qhov no muaj nyob rau hauv daim duab 79 thiab 80.
Daim duab 79: Huck-Spin® Locking Bolts
Daim duab 80: Huck-spin® Installation Sequence
6, Eddie-Bolt® Fasteners
Eddie-Bolt® fasteners (Alcoa) zoo ib yam hauv kev tsim rau Hi- Loks® thiab yog ib qho kev xaiv ntuj tsim rau carbon fiber ntau cov qauv.Eddie-Bolt® pins yog tsim los nrog recesses nyob rau hauv lub threaded feem kom tso cai rau zoo xauv thaum lub sij hawm installation siv tshwj xeeb tsim mating txiv ntseej los yog splices. Cov txiv ntseej mating muaj peb lub pendant tabs uas ua raws li tsav tav.
Thaum lub sij hawm installation, ntawm ib tug predetermined preload, lub nco tabs compress cov txiv ntoo cov ntaub ntawv mus rau hauv lub grooves ntawm kauv thiab tsim ib tug xauv feature. Qhov zoo ntawm cov khoom siv sib xyaw yog cov titanium ceev tuaj yeem siv tau, uas yog sib xws thiab txuag qhov hnyav yam tsis muaj kev ntshai ntawm kev hnav. Cov txiv ntseej tig ywj siab thiab tsim kom muaj kev xauv lub ntsej muag thaum kawg ntawm lub voj voog kev teeb tsa. Qhia hauv daim duab 81.
Daim duab 81: Eddie Bolts® Eddie Bolts
7,Cherry's E-Z Buck® (CSR90433) Hollow End Rivet
Peach hom hollow end E-Z Buck® rivets yog ua los ntawm titanium-niobium alloy nrog lub zog shear ntawm 40 KSI.E-Z Buck® rivets yog tsim los rau kev siv ob npaug rau hauv cov roj tso tsheb hlau luam. Lub ntsiab kom zoo dua ntawm hom rivet no yog tias nws yuav tsum muaj tsawg tshaj li ib nrab ntawm lub zog ntawm cov khoom rivet ntawm tib cov khoom. Cov rivets yog haum nrog cov khoom siv riveting tsis siv neeg lossis lub rivet extruder. Kev xaiv tshwj xeeb tuag kom ntseeg tau tias lub tshuab extruder yog ib txwm nyob nruab nrab thaum lub sijhawm teeb tsa kom tsis txhob ua rau cov qauv puas. Qhia hauv daim duab 82.
Daim duab 82: Peach E-Z phaw hollow rivet
8, dig muag fasteners
Cov qauv sib xyaw tsis tas yuav tsum tau muaj ntau yam fasteners li hlau dav hlau vim hais tias cov stiffeners thiab doublers yog co-kho nrog lub plhaub, tshem tawm qhov xav tau rau ntau fasteners. Hauv cov qauv sib xyaw, qhov loj dua ntawm cov dav hlau panels ua rau tsis tuaj yeem nkag mus rau hauv qab. Yog li ntawd, cov ntsia hlau thiab txiv ntoo daim hlau nrog qhov muag tsis pom kev yuav tsum tau siv rau hauv cov cheeb tsam no. Ntau lub tuam txhab tsim cov qhov muag tsis pom kev rau cov qauv sib xyaw thiab qee qhov xwm txheej tau tham hauv qab no.
8.1 Dig muag Bolts
Cherry Maxibolt® (Peach Maxi Bolt) yog ua los ntawm titanium thiab sib xws nrog cov qauv sib xyaw. Maxibolt® muaj lub zog shear ntawm 95 KSI. nws tuaj yeem ntsia tau los ntawm ib sab siv G-83 lossis sib npaug pneumatic-hydraulic installation cuab yeej, thiab muaj nyob rau hauv 100℃tiaj tus, 130℃countersunk, thiab protruding lub taub hau hom. Qhia hauv daim duab 83.
Daim duab 83: Titanium rau Peach Maxi Bolts
Alcoa UAB ™ Blind Bolt System yog tsim los rau cov qauv sib xyaw thiab muaj nyob rau hauv ob qho tib si titanium thiab stainless hlau.The UAB ™ Blind Bolt System muaj nyob rau hauv 100℃ca, 130℃countersunk, thiab protruding lub taub hau hom.
Lub Accu-Lok™ qhov muag tsis pom kev txuas yog tsim los rau cov qauv sib xyaw uas qhov kev nkag tau txwv rau ib sab ntawm cov qauv. Nws muab kev sib koom ua ke siab ua ntej nrog cov kab kab loj loj ntawm sab tsaus. Cov hneev taw loj tso cai rau kev sib koom ua ke ua ntej tshaj qhov chaw loj dua, zoo li tshem tawm qhov muaj peev xwm ntawm cov txheej txheem delaminated composite.Accu-Lok™ muaj lub zog shear ntawm 95 KSI thiab muaj nyob rau hauv 100℃tiaj tus, 130℃countersunk, thiab protruding taub hau hom®.A zoo sib xws fastener hu ua "L}}Raogram. Nws muaj nyob rau hauv daim duab 84.
Daim duab 84: Accu-Lok™ Installation
9, tsis tshua muaj cua sov fibers
Tsawg-cov cua sov fastening tshuab siv cov khoom sib xyaw yog siv dav hauv aerospace hardware. Tsawg- cua sov fiber ntau fasteners muaj zog npaum li ob -feem peb qhov hnyav ntawm txhuas. Composite fastener muaj cov khoom zoo sib xws nrog carbon thiab iav fibers.
10, Screw thiab txiv ntseej panels hauv cov qauv sib xyaw
Yog hais tias cov panels yuav tsum tau disassembled ib ntus rau kev saib xyuas, nws raug pom zoo kom siv cov ntsia hlau thiab txiv ntseej daim hlau es tsis txhob siv Hi-Loks® lossis qhov muag tsis pom kev. Cov txiv ntseej daim hlau siv hauv cov qauv sib xyaw feem ntau xav tau peb lub qhov: ob lub rau txuas cov txiv ntseej phaj thiab ib qho rau cov ntsia hlau tshem tau, txawm hais tias rivetless thiab nplaum nplaum -cov txiv ntseej daim hlau tsis tas yuav tsum muaj ob qhov ntxiv rau qhov drilling thiab tapping.
Yuav tsum tau txuas ntxiv
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