Mechanical Characteristics of Typical Plant Leaves-中国Betway体育网页登陆

摘要 Plantleafisanaturalcompositebiomaterial,anditsstrengthiscloselyrelatedtothemicrostructure.Inthispaper,themechanicalcharacteristicsofeightspeciesofplantleaveswereinvestigatedandanalyzed.Theultimatestrengthofleavesandthehardnessofleafsurfacesweremeasuredbyusinguniversaltestingmachineandnanoindentertester,respectively.Thetensilestrengthoftheparallelmicrostructurewasinvestigatedbasedonitscross-sectionalmechanicalmodel.Theresultsoftensiontestsindicatethattheultimatestrengthofaleafisrelatedtothematerialcompositionandstructure.Thecoriaceousleavesusuallyexhibithighertensilestrength.Forexample,thePhyllostachyspubescensleafcanachievethemaximumultimatestrengthof5.9091N·mm-2.Itisconcludedfromtheresultsofhardnessteststhatmaterialcomponentsofleafsurfacecaninfluencethesurfacehardnessevidently.Theleafsurfacecomposedofmoreligninandcellulosematerialsshowsahighersurfacehardnessthanthatcomposedofmorecarbohydratesmaterials.

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Mechanical Characteristics of Typical Plant Leaves

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