标准资料网-标准资料免费资源平台

【英文标准名称】:StandardTestMethodforFlexuralStrengthofAdvancedCeramicswithEngineeredPorosity(HoneycombCellularChannels)atAmbientTemperatures
【原文标准名称】:环境温度下带工业孔隙(蜂窝状孔道)的高级陶瓷抗挠强度的标准试验方法
【标准号】:ASTMC1674-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:C28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:高级陶瓷;催化剂;微孔结构;过滤器;抗弯强度;蜂巢;蜂巢状结构强度;标称横梁强度;孔隙率;墙体断裂强度;多孔材料
【英文主题词】:advancedceramics;catalysts;cellularstructure;filters;flexuralstrength;honeycomb;honeycombstructurestrength;nominalbeamstrength;porosity;wallfracturestrength;Cellularmaterials
【摘要】:Thistestmethodisusedtodeterminethemechanicalpropertiesinflexureofengineeredceramiccomponentswithmultiplelongitudinalhollowchannels,commonlydescribedasx201C;honeycombx201D;channelarchitectures.Thecomponentsgenerallyhave30%ormoreporosityandthecross-sectionaldimensionsofthehoneycombchannelsareontheorderof1millimeterorgreater.Theexperimentaldataandcalculatedstrengthvaluesfromthistestmethodareusedformaterialandstructuraldevelopment,productcharacterization,designdata,qualitycontrol,andengineering/productionspecifications.Note18212;Flexuretestingisthepreferredmethodfordeterminingthenominalx201C;tensilefracturex201D;strengthofthesecomponents,ascomparedtoacompression(crushing)test.Anominaltensilestrengthisrequired,becausethesematerialscommonlyfailintensionunderthermalgradientstresses.Atruetensiletestisdifficulttoperformonthesehoneycombspecimensbecauseofgrippingandalignmentchallenges.Themechanicalpropertiesdeterminedbythistestmethodarebothmaterialandarchitecturedependent,becausethemechanicalresponseandstrengthoftheporoustestspecimensaredeterminedbyacombinationofinherentmaterialpropertiesandmicrostructureandthearchitectureofthechannelporosity[porosityfraction/relativedensity,channelgeometry(shape,dimensions,cellwallthickness,etc.),anisotropyanduniformity,etc.]inthespecimen.Comparisonoftestdatamustconsiderbothdifferencesinmaterial/compositionpropertiesaswellasdifferencesinchannelporosityarchitecturebetweenindividualspecimensanddifferencesbetweenandwithinspecimenlots.1.1Thistestmethodcoversthedeterminationoftheflexuralstrength(modulusofruptureinbending)atambientconditionsofadvancedceramicstructureswith2-dimensionalhoneycombchannelarchitectures.1.2Thetestmethodisfocusedonengineeredceramiccomponentswithlongitudinalhollowchannels,commonlycalledx201C;honeycombx201D;channels.(SeeFig.1.)Thecomponentsgenerallyhave30%ormoreporosityandthecross-sectionaldimensionsofthehoneycombchannelsareontheorderof1millimeterorgreater.Ceramicswiththesehoneycombstructuresareusedinawiderangeofapplications(catalyticconversionsupports(1),hightemperaturefilters(2,3),combustionburnerplates(4),energyabsorptionanddamping(5),etc.).Thehoneycombceramicscanbemadeinarangeofceramiccompositionsalumina,cordierite,zirconia,spinel,mullite,siliconcarbide,siliconnitride,graphite,andcarbon.Thecomponentsareproducedinavarietyofgeometries(blocks,plates,cylinders,rods,rings).1.3Thetestmethoddescribestwotestspecimengeometriesfordeterminingtheflexuralstrength(modulusofrupture)foraporoushoneycombceramictestspecimen(seeFig.2):1.3.1TestMethodA8212;A4-pointor3-pointbendingtestwithuser-definedspecimengeometries,and1.3.2TestMethodB8212;A4-point-x00BC;pointbendingtestwithadefinedrectangularspecimengeometry(13mmx00D7;25mmx00D7;>116mm)anda90mmoutersupportspangeometrysuitableforcordieriteandsiliconcarbidehoneycombswithsmallcellsizes.【英文标准名称】:Plasticspipingsystemsforindustrialapplications-Polybutylene(PB),polyethylene(PE)andpolypropylene(PP)-Specificationsforcomponentsandthesystem;Metricseries(ISO15494:2003);GermanversionENISO15494:2003
【原文标准名称】:工业用塑料管道系统.聚丁烯(PE)、聚乙烯(PE)和聚丙烯(PP).元件和系统的规范.米制系列
【标准号】:DINENISO15494-2003
【标准状态】:现行
【国别】:德国
【发布日期】:2003-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:材料;特性;PB聚丁烯;作标记;聚丙烯;聚丙烯;管;试验;尺寸;管系统;电性能;密封层(剂);聚丁烯;直径;分类;配件;机械性能;工业管道系统;PE聚乙烯;管道;塑料;物理性能;塑料管;塑料管;应用;管道配件;管联接器;定义;使用;阀门;米制的;电性质和电现象;工业;聚乙烯;化学性质
【英文主题词】:Applications;Chemicalproperties;Classification;Definition;Definitions;Diameter;Dimensions;Electricalproperties;Electricalpropertiesandphenomena;Fittings;Industrialpipeworksystems;Industries;Marking;Materials;Mechanicalproperties;Metric;PB;PE;Physicalproperties;Pipecouplings;Pipefittings;Pipelines;Pipes;Pipingsystem;Plasticpipes;Plastictubes;Plastics;Plasticspiping;Polybutylene;Polyethylene;Polypropylene;PP;Properties;Sealants;Testing;Use;Valves
【摘要】:ThisStandardspecifiesthecharacteristicsandrequirementsforapipingsystemanditscomponentsmadefromPB,PEandPPintendedtobeusedforindustrialapplicationsaboveground.#,,#
【中国标准分类号】:G33
【国际标准分类号】:23_040_01
【页数】:89P.;A4
【正文语种】:德语