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Microstructures of Bamboo and Biomimetic Research  
Microstructures of Bamboo and Biomimetic Research
資料類型: PDF文件
關(guān)鍵詞: Bamboo  Microstructure  Fiber-reinforced  composite  Fracture  toughness  
資料大小: 69K
所屬學(xué)科: 分子表征
來(lái)源: 第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集(2013.6.2-6 武漢)
簡(jiǎn)介:
Throughtheevolutionofmanycenturies,bambooachieveshigherstiffness,strengthandfracturetoughnesscl].Theeminentmechanicalpropertiesofbambooarecloselyrelatedtoitsexcellentmicrostructure[2].Inthiswork,ascanningelectronmicroscope(SEM)isusedtoobservethemicrostructureofabamboo.Theobservationshowsthatthebambooisakindofnaturalcellularbiocompositeconsistingofcountlessbamboocells.Thebamboocellsarearrangedwithinterphaseformandparalleltothesurfaceofthebamboo.Morecarefulobservationshowsthateachbamboocellconsistsofbamboo-fiberpliesandorganicmatrix.Thefibersinthedifferentfiberplieshavedifferentdirectionswhichcomposeakindofhelicoidal-columnarmicrostructure.Basedontheobservation,themaximumfiber-pulloutforceofthehelicoidal-columnarmicrostructure,whichisrelatedtothefracturetoughnessofthebamboo,isinvestigatedbasedonitsrepresentativemodel.Theinvestigatedresultsshowedthatthehelicoidal-columnarmicrostructuremarkedlyincreasesthefracturetoughnessofthebamboo.Akindofbiomimetic-bamboocompositeisfabricatedwithaspecialmouldandprocess.Thefracturetoughnessofthebiomimetic-bamboocompositeisexperimentallytested.Itshowsthatthebiomimetic-bamboocompositepossessesmarkedlyhigherfracturetoughnessthanconventionalfiber-reinforcedcomposite.
作者: B. Ched, D. Yid , Z. Zhang, J. Fan
上傳時(shí)間: 2013-07-01 14:50:56
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