简介：Weinvestigatehigh-modulusdegradablematerialsintendedtoreplacemetalsinbiomedicalapplications.Thesearetypicallycompositescomprisingapolylactide(PLA)matrixreinforcedwithphosphateglassfibres,whichprovidereinforcementsimilartoE-glassbutareentirelydegradableinwatertoproduce,principally,calciumphosphate.Wehavemadecompositesusingavarietyoffibrearchitectures,fromnon-wovenrandommatstounidirectionalfibretapes.Flexuralpropertiesintheregionof30GPamodulusand350MPastrengthhavebeenachieved-directlycomparabletoquotedvaluesforhumancorticalbone.Incollaborationwithothergroupswehavebeguntoconsiderthedevelopmentoffoamedsystemswithstructuresmimickingcancellousboneandthishasshownsignificantpromise.Thefibresinthesefoamedstructuresprovideimprovedcreepresistanceandreinforcementoftheporewalls.Todatethematerialshaveexhibitedexcellentcellularresponsesinvitroandfurtherstudiesareduetoincludeconsiderationofthesurfacecharacterofthematerialsandtheinfluenceofthisoncellinteraction,bothwiththecompositesandtheglassfibresthemselves,whichshowpromiseasastandaloneporousscaffold.

简介：包括在它的稳固的核心的一个椭圆的空气洞，高度双折射的蜂房photonicbandgap纤维(PBGF)的新结构被使用fullvectorial飞机波浪扩大方法建议并且分析。从数字结果，这被证实proposedPBGF，有10的顺序的birefringence(-3)。而且，在改变规范的波长有二个single-polarizationsingle-mode范围在仅仅慢轴的模式哪个存在之一，并且在其它，仅仅快轴的模式存在，它到目前为止没在index-guidingphotonic水晶纤维被完成。

简介：TheconstitutiveequationforasemiconcentratedfibresuspensionintheOldroyd-Bfluidhasbeenderivedfromastatisticalmodelofsuchasuspensionbyemployingthemoleculartheoryforpolymericliquids.Tocircumventtheoreticaldifficultiesinviscoelasticfluidmechanics,severalsimplifiedmodelsareusedtoaccountfortheinteractionsoffibresandpolymermolecules.Someofmaterialfunctionsarecalculatedintermsoftheconstitutiveequation.

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简介：ResearcheffortsmadesofartosimulatefibresuspensionflowsarelimitedtofibresuspensionsinNewtonianfluids.Thoughshortfibrecompositesaremostlymadeofpolymers,lackofsuitableconstitutiveequationsforfibresuspensionsinviscoelasticfluidsfrustratesattemptstosimulateflowsofthesesuspensions.ApreliminaryworkdonebytheauthorledtoaconstitutiveequationforsemiconcentratedfibresuspensionsintheOldroyd-Bfluid.Thispaperdescribesthemathematicalformulationoftheflowproblemsforsuchasuspensionandthenumericalproceduretosolvethem.Somenumericalresultsofflowpastasphereinatubearealsopresented.

简介：Fibrestressofglassfibrereinforcedpolymericcopmositesonloadisdeterminedbyusingopticalfibreasmodelfiberandbymeansoflaserinterferencemethod.Inaddition,theoriginationoffibrestressduringmouldingprocessofcompositesandtherelationbetweenfiberstressofloadedcompositesandexternalstressareexamined.Theexperimentsshowthatfibrestressisrelatedtomolecularstructureofinterfacialmaterialsandstructureofinterfaciallayers.Whenstressistransferredfrommatrixtofibre,eachinterfaciallayerhasdifferentstressgradientanddeformability.Thispropertycanbecharacterizedbyintroducinganinterfacialstresstransfercoefficientktothetwo-phasemodel.

简介：Theprincipleofnewopticalfibrepressuretransducerisanalysed,andinge-niousdesignschemeofthistransducerisvigen.Thisnewtransducerspecimenisprovidedwithfollowingcharacteristics;experimentaltransmittingdistanceis20m(actuallyupto1000m);systemsensitivityis0.1mV/Pa;powerconsumptionoftheprobeislessthan125μW.Finally,somepointsoftheappraisementaregiveninthispaper.

简介：Surfaceoriginatedkinkbandsconsistofanimportantfailuremodeforfibre-reinforcedcompo-sitesundercompression.Themechanicalbehaviorofthefibrebridgingkinkbandsisexploredhereininthecontextofthepost-microbucklingtheory.Expressionsofbridgingforceareobtainedfortheentirepostbucklingprocessofthefibresexhibitingweakorstronghardening.Thepostbucklingformulationofthefibresisappliedtoyieldthetoughnessincrementduetotheadvancingkinkbands,andconsequentlyleadstoaquantitativepre-dictionontheoverallcompressivestressstraincurvesofthefibre-reinforcedcomposites.

简介：掺杂物的热散开在产生塑料光纤的等级索引侧面的过程被调查。因为在高聚合物的散开系数被显示了强烈取决于掺杂物集中，与multistep核心纤维的光线的坐标变化在这个工作被允许。一个新奇多层的模型为与可变散开系数解决散开方程被介绍。它被有限差别方法解决。答案在纤维决定掺杂物散开侧面。它与传播侧面从文学和纤维的二个案例对一个答案被验证。应用程序在等级索引塑料光纤的二个例子上被演示，一个原来与有四步的核心的一个二拍子的圆舞和其它。结果显示更近到核心穿着的接口，有可变散开系数D的计算传播侧面比在热过程的一样的时间与经常的D获得的侧面接近目标侧面。

简介：有在800nm附近的零分散的波长的photonic水晶纤维(PCF)被设计并且制作。为这PCF的基本模式的零分散的波长在826nm的模仿的结果表演，和匹配阶段的四波浪的混合罐头在基本模式被完成。用有在是的810nm的中央波长的200fsTi:sapphire激光抽，反--司烧在610nm附近的线高效地被产生。输出信号有象Gaussian一样侧面，它显示反--司烧信号在PCF的基本模式。反的精力--司烧信号比剩余泵激光和反的最大的比率的高--司烧到在产量光谱的泵部件的信号被估计是1.2。[从作者抽象]

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简介：在组成的部件之间的有瑕疵的结合能极大地影响合成结构的性质。处于2Dfibrereinforced的问题产生的有瑕疵的接口的不同类型的asymptotic分析合成材料被建议。执行学习基于管理biharmonic问题的asymptotic减小进二个泛音问题。所有答案在一种关上的分析形式被获得。获得的结果能被用于撤退和pushout测试的计算，以及为合成材料的破裂的调查。

简介：Wereviewtheuseofhollow-corephotoniccrystalfibre(HC-PCF)forhighpowerlaserbeamdelivery.AcomparisonofbandgapHC-PCFwithKagome-latticeHC-PCFonthegeometry,guidancemechanism,andopticalpropertiesshowsthattheKagome-typeHC-PCFisanidealhostforhighpowerlaserbeamtransportationbecauseofitslargecoresize,lowattenuation,broadbandtransmission,single-modeguidance,lowdispersionandtheultra-lowopticaloverlapbetweenthecore-guidedmodesandthesilicacore-surround.ThepowerhandlingcapabilityofKagome-typeHC-PCFisfurtherexperimentallydemonstratedbymillijoulenanosecondlasersparkignitionand~100μJsub-picosecondlaserpulsetransportationandcompression.

简介：Theblastresistanceofstructuresusedinbuildingsneedstobeinvestigatedduetotheincreasedthreatofaterroristattack.ThedamagedonebyCompositionBorPowergeltosteelfibrereinforcedreactivepowderconcrete(SFRPC)panelsandordinaryreinforcedconcrete(RC)panelsofequivalentstaticflexuralstrengthiscompared.A0.5kgchargewasdetonatedatadistanceof0.1mfromthe1.3m×1.0m×0.1m(thick)panels,whichweresimplysupportedandspaning1.3m.Dynamicdisplacementmeasurements,high-speedvideorecordingandvisualexaminationofthepanelsforspallandbreachwereundertaken.TheSFRPCpanelswithstoodthebarechargeblastbetterthanthereinforcedordinaryconcretepanels.Neithertypeofpanelwasbreachedusinga0.5kgcharge.TheRCpanelexhibitedmorespallingwhenCompositionBwasused.UndersuccessiveCompositionBloadingconditions,theRCpanelwasbreached.IncomparisontheSFRPCpanelwasnotbreached.ExposuretofragmentingchargeloadingconditionsconfirmedtheseperformancedifferencesbetweentheSFRPCpanelandthereinforcedordinaryconcretepanel.

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简介：Weldabilityofpolyetheretherketone(PEEK)withpolyetherimide(PEI)istested.AndcarbonfiberreinforcedPEEKlaminatesareresistanceweldedusingstainlesssteelmeshheatingelement.Theeffectsoftheweldingtimeandweldingpressureonthelapshearstrengthofjointsareinvestigated.ResultsshowthatPEEKcanhealwithPEIwellinweldingconditionandthelapshearstrengthofPEEK/CF(carbonfibre)jointincreaseslinearlywithweldingtime,butreachesamaximumvaluewhenweldingpressurerangingfrom0.3MPato0.5MPawithconstantweldingtime.ThefracturecharacteristicsofsurfaceareanalyzedbySEMtechniques,andfourtypesoffracturemodesoflapshearjointsaresuggested.

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简介：一种极端狭窄的双隧道的过滤器原则上被建议anddemonstrated试验性地。这个过滤器借助于二个取样的纤维布拉格栅栏(SFBG)被设计，在一个人是周期的0-pi采样，其它是对称的空间采样的地方。Theformer能在传播系列创造二stopbands，后者能生产twoultra-riarrow通带。我们的过滤器有大约1下午的3-dB带宽，其价值是二ordersof大小不到传统的SFBG过滤器的带宽。建议过滤器有隧道间距仍然是的amerit未改变当调节过滤器时。

简介：Fibre-opticmagneticsensorswithmagnetostrictivefilmsareusedasall-fibreMach-Zehnderinterferometertodetecttheopticalphaseshift,whichiscausedbythemagnetostriction-inducedstrainstransferredfromthemsgnetostrictivefilmtothefibre.Atheoreticalmodelbasedontheplanestrainapproximationanduniformaxialstrainisdevelopedtodeterminethemagneto-mechano-opticaltransferrelationsinthiskindofsensors.Theexpressionforthemodelispresentedaswellasrelationofthephaseshiftinthefibretothemagneticandelasticpropertiesofthemagnetostrictivefilmcoatedonthefibre.Andfromthemodel,thethicknessofthefilmhassignificantinfluenceonthephaseshift.