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Carbon Fiber


 
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MessagePosté le: Sam 21 Mai - 10:31 (2016)    Sujet du message: Carbon Fiber Répondre en citant




Carbon Fiber > urlin.us/2c5z4





Carbon.fibers.from.Toray,.Celanese.and.Akzo.found.their.way.to.aerospace.application.from.secondary.to.primary.parts.first.in.military.and.later.in.civil.aircraft.as.in.McDonnell.Douglas,.Boeing.and.Airbus.planesCFRP...liner...designs...are...based...on...strain...compatibility...between...the...liner...and...host...pipe.[21]CFRP..is..a..more..costly..material..than..its..counterparts..in..the..construction..industry,..glass..fiber-reinforced..polymer..(GFRP)..and..aramid..fiber-reinforced..polymer..(AFRP),..though..CFRP..is,..in..general,..regarded..as..having..superior..propertiesWrapping..around..sections..(such..as..bridge..or..building..columns)..can..also..enhance..the..ductility..of..the..section,..greatly..increasing..the..resistance..to..collapse..under..earthquake..loadingRetrofitting..has..become..the..increasingly..dominant..use..of..the..material..in..civil..engineering,..and..applications..include..increasing..the..load..capacity..of..old..structures..(such..as..bridges)..that..were..designed..to..tolerate..far..lower..service..loads..than..they..are..experiencing..today,..seismic..retrofitting,..and..repair..of..damaged..structuresMuch...research...continues...to...be...done...on...using...CFRP...both...for...retrofitting...and...as...an...alternative...to...steel...as...a...reinforcing...or...pre-stressing...materialISBN1-57766-425-6www.stltoday.com...(Reuters)Much.research.continues.to.be.done.on.using.CFRP.both.for.retrofitting.and.as.an.alternative.to.steel.as.a.reinforcing.or.pre-stressing.materialThis..is..because..the..material..used..in..this..application..is..typically..very..strong..(e.g.,..3000..MPa..ultimate..tensile..strength,..more..than..10..times..mild..steel)..but..not..particularly..stiff..(150..to..250..GPa,..a..little..less..than..steel,..is..typical)Poles...for...high...reach,...e.g^..."Zyvex...Performance...Materials...Launch...Line...of...Nano-Enhanced...Adhesives...that...Add...Strength,...Cut...Costs"...(PDF)...(Press...release)Retrieved..26..March..2015"Lockheed.Martin.reveals.F-35.to.feature.nanocomposite.structures"Applications[edit]These..fibers..are..bundled..and..then..combined..in..various..ways..to..create..carbon..fiber..reinforcement..and..parts..that..take..on..this..strength..propertyCorrosion.in.the.form.of.hydrogen.embrittlement.has.been.blamed.for.the.gradual.deterioration.of.the.pre-stressing.wires.in.many.PCCP.linesMany..supercars..over..the..past..few..decades..have..incorporated..CFRP..extensively..in..their..manufacture,..using..it..for..their..monocoque..chassis..as..well..as..other..components.[16]..As..far..back..as..1971,..the..Citron..SM..offered..optional..lightweight..carbon..fiber..wheels.[17][18]19..February..2006In.this.application,.the.confinement.of.the.CFRP.wrap.enhances.the.compressive.strength.of.the.concreteWikimedia.Commons.has.media.related.to.Carbon.fiber.reinforced.plasticdoi:10.1038/ncomms3819Retrieved...11...October...2013Once.a.thin.shell.is.created.out.of.carbon.fiber,.the.chopper.gun.cuts.rolls.of.fiberglass.into.short.lengths.and.sprays.resin.at.the.same.time,.so.that.the.fiberglass.and.resin.are.mixed.on.the.spotPlease.enter.a.valid.email.address.The.tow.is.a.bundle.of.thousands.of.continuous.individual.carbon.filaments.held.together.and.protected.by.an.organic.coating,.or.size,.such.as.polyethylene.oxide.(PEO).or.polyvinyl.alcohol.(PVA)"Temperature..effect..during..humid..ageing..on..interfaces..of..glass..and..carbon..fibers..reinforced..epoxy..composites"The.primary.element.of.CFRP.is.a.carbon.filament;.this.is.produced.from.a.precursor.polymer.such.as.polyacrylonitrile.(PAN),.rayon,.or.petroleum.pitchCarbon.fibers.are.classified.by.the.tensile.modulus.of.the.fiberUntil.recently,.the.material.has.had.limited.use.in.mass-produced.cars.because.of.the.expense.involved.in.terms.of.materials,.equipment,.and.the.relatively.limited.pool.of.individuals.with.expertise.in.working.with.itDepending.upon.the.precursor.to.make.the.fiber,.carbon.fiber.maybe.turbostratic.or.graphitic,.or.have.a.hybrid.structure.with.both.graphitic.and.turbostratic.parts.presentSpecialist..aircraft..designer..and..manufacturer..Scaled..Composites..have..made..extensive..use..of..CFRP..throughout..their..design..range..including..the..first..private..manned..spacecraft..Spaceship..OneHowever,..although..large..increases..are..achieved..in..the..ultimate..collapse..load,..the..concrete..will..crack..at..only..slightly..enhanced..load,..meaning..that..this..application..is..only..occasionally..usedFor.example,.T400.from.Toray.with.a.tensile.strength.of.4,000.MPa.and.M40,.a.modulus.of.400.GPaFurther...information:...Structural...applications...of...FRP^.Kopeliovich,.Dmitri f5880b0734



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MessagePosté le: Sam 21 Mai - 10:31 (2016)    Sujet du message: Publicité

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