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【英文标准名称】:StandardTestMethodforBearing/BypassInteractionResponseofPolymerMatrixCompositeLaminatesUsing2-FastenerSpecimens
【原文标准名称】:承受/旁通用2种紧固样品的聚合物基质复合叠层碾压的交感响应的标准试验方法
【标准号】:ASTMD7248/D7248M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D30.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bearing/bypassproperties;bearingstrength;bypassstrength;compositematerials;Laminates(aerospace);Polymers(composites)
【摘要】:Thistestmethodisdesignedtoproducebearing/bypassinteractionresponsedataforresearchanddevelopment,andforstructuraldesignandanalysis.Thestandardconfigurationforeachprocedureisveryspecificandisintendedasabaselineconfigurationfordevelopingstructuraldesigndata.ProcedureA,thebypass/highbearingdouble-shearconfigurationisrecommendedfordevelopingdataforspecificapplicationswhichinvolvedoubleshearjoints.ProcedureB,thebypass/highbearingsingle-shearconfigurationismoreusefulintheevaluationoftypicaljointconfigurations.Thespecimenmaybetestedineitheranunstabilized(nosupportfixture)orstabilizedconfiguration.Theunstabilizedconfigurationisintendedfortensileloadingandthestabilizedconfigurationisintendedforcompressiveloading.Theseconfigurations,particularlythestabilizedconfiguration,havebeenextensivelyusedinthedevelopmentofdesignallowablesdata.Thevariantsofeitherprocedureprovideflexibilityintheconductofthetest,allowingadaptationofthetestsetuptoaspecificapplication.However,theflexibilityoftestparametersallowedbythevariantsmakesmeaningfulcomparisonbetweendatasetsdifficultifthedatasetswerenottestedusingidenticaltestparameters.ProcedureC,thebypass/lowbearingdouble-shearhardpointconfigurationisrecommendedfordeterminingtheeffectoflowbearingstresslevelsonbypassstrength.Whileasimilarsingle-shearconfigurationcouldbetested,thereisinsufficientexperiencewithasingle-shearconfigurationtorecommenditsuseatthistime.Generalfactorsthatinfluencethemechanicalresponseofcompositelaminatesandshouldthereforebereportedincludethefollowing:material,methodsofmaterialpreparationandlay-up,specimenstackingsequence,specimenpreparation,specimenconditioning,environmentoftesting,specimenalignmentandgripping,speedoftesting,timeheldattesttemperature,voidcontent,andvolumepercentreinforcement.Specificfactorsthatinfluencethebearing/bypassinteractionresponseofcompositelaminatesandshouldthereforebereportedincludenotonlytheloadingmethod(eitherProcedureAorB)andloadingtype(tensionorcompression)butthefollowing(forbothprocedures):edgedistanceratio,widthtodiameterratio,diametertothicknessratio,fastenertorque,fastenerorpinmaterial,fastenerorpinclearance;and(forProcedureBonly)countersinkangleanddepthofcountersink,typeofgrommet(ifused),typeofmatingmaterial,andtypeofsupportfixture(ifused).Properties,inthetestdirection,whichmaybeobtainedfromthistestmethodincludethefollowing:Filledholetensilebearing/bypassstrength.Filledholecompressivebearing/bypassstrength.Bearingstress/bypassstraincurve.1.1Thistestmethoddeterminestheuniaxialbearing/bypassinteractionresponseofmulti-directionalpolymermatrixcompositelaminatesreinforcedbyhigh-modulusfibersbyeitherdouble-sheartensileloading(ProceduresAandC)orsingle-sheartensileorcompressiveloading(ProcedureB)ofatwo-fastenerspecimen.Thescopeofthistestmethodislimitedtonetsection(bypass)failuremodes.Standardspecimenconfigurationsusingfixedvaluesoftestparametersaredescribedforeachprocedure.Anumberoftestparametersmaybevariedwithinthescopeofthestandard,providedthattheparametersarefullydocumentedinthetestreport.Thecompositematerialformsarelimitedtocontinuous-fiberordiscontinuous-fiber(tapeorfabric,orboth)reinforcedcompositesforwhichthelaminateisbalancedandsymmetricwithrespecttothetestdirection.Therangeofacceptabletest......
【中国标准分类号】:G31
【国际标准分类号】:59_100_01
【页数】:30P.;A4
【正文语种】:英语


【英文标准名称】:Tractors,machineryforagricultureandforestry,poweredlawnandgardenequipment-Symbolsforoperatorcontrolsandotherdisplays-Part2:symbolsforagriculturaltractorsandmachinery.
【原文标准名称】:拖拉机、农林机械、动力草坪及园艺设备.操作者操作和其他显示符号.第2部分:农业拖拉机及机械用符号
【标准号】:NFU02-105-2-2003
【标准状态】:作废
【国别】:法国
【发布日期】:2003-11-01
【实施或试行日期】:2003-11-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:园艺设备;农业机械;剪草机;指示装置构件;操纵装置;操作台;机械工程;人类工效学;园艺机具;控制装置;林业机械;操作元件;农用拖拉机;名称与符号;机动;图形符号;符号;定义;林业;机器;工作地点;林业设备;控制;牵引车;农用设备;农业;机动车操作的;指示器;指示器
【英文主题词】:Agriculturalequipment;Agriculturalmachines;Agriculturaltractors;Agriculture;Controldevices;Controls;Definition;Definitions;Designations;Ergonomics;Forestry;Forestryequipment;Forestrymachines;Gardeningequipment;Graphicsymbols;Horticulturalequipment;Indicatingdevicecomponents;Indicators;Lawn-mowers;Machines;Manipulatingdevices;Mechanicalengineering;Motor-operated;Operatingelements;Operatingstations;Powered;Symbols;Telltales;Tractors;Workingplaces
【摘要】:
【中国标准分类号】:B91
【国际标准分类号】:01_080_30;65_060_01
【页数】:45P;A4
【正文语种】:其他