【英文标准名称】:Ethanolasablendingcomponentforpetrol-Determinationofphosphorus,copperandsulfurcontent-Directmethodbyinductivelycoupledplasmaopticalemissionspectrometry(ICPOES);GermanversionEN15837:2009
【原文标准名称】:作为汽油混合组分之一的乙醇.磷、铜和硫含量的测定.用电感耦合等离子体法(ICPOES)的直接法.德文版本EN15837-2009
【标准号】:DINEN15837-2010
【标准状态】:现行
【国别】:德国
【发布日期】:2010-04-01
【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】:添加剂;机动车燃料;混合物;调和组分;化学分析和试验;含量;铜;铜含量;测定;含量测定;发射分光光度测定法;酒精;汽油;汽油添加剂;感应耦合等离子体;材料试验;方法;汽车;光谱法;光学发射光谱法;石油产品;磷;磷含量;抽样方法;光谱测定法;硫;硫含量
【英文主题词】:Additives;Automotivefuels;Blending;Blendingcomponents;Chemicalanalysisandtesting;Content;Copper;Coppercontent;Determination;Determinationofcontent;Emissionspectrophotometry;Ethanol;Gasoline;Gasolineadditives;ICP;Materialstesting;Methods;Motorvehicles;OES;OpticalEmissionSpectroscopy;Petroleumproducts;Phosphorus;Phosphoruscontent;Samplingmethods;Spectrometry;Sulphur;Sulphurcontent
【摘要】:ThisEuropeanStandardspecifiesaninductivelycoupledplasmaopticalemissionspectrometry(ICP-OES)methodforthedirectdeterminationofelementscontentinethanol,namelyphosphorusintherange(0,13to1,90)mg/kg,copperintherange(0,050to0,300)mg/kg,andsulfurintherange(2,0to15,0)mg/kg.
【中国标准分类号】:G15
【国际标准分类号】:75_160_20
【页数】:13P.;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodforCoreShearPropertiesofSandwichConstructionsbyBeamFlexure
【原文标准名称】:通过梁柔性构造叠合板中心剪切特性的标准试验方法
【标准号】:ASTMC393/C393M-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【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】:D30.09
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bendingstress;coremodulus;corestress;facingstress;sandwichconstruction;sandwichdeflection;shearstress
【摘要】:Flexuretestsonflatsandwichconstructionmaybeconductedtodeterminethesandwichflexuralstiffness,thecoreshearstrengthandshearmodulus,orthefacingscompressiveandtensilestrengths.Teststoevaluatecoreshearstrengthmayalsobeusedtoevaluatecore-to-facingbonds.Thistestmethodislimitedtoobtainingthecoreshearstrengthorcore-to-facingshearstrengthandthestiffnessofthesandwichbeam,andtoobtainingload-deflectiondataforuseincalculatingsandwichbeamflexuralandshearstiffnessusingPracticeD7250.Note18212;CoreshearstrengthandshearmodulusarebestdeterminedinaccordancewithTestMethodC273providedbarecorematerialisavailable.FacingstrengthisbestdeterminedinaccordancewithTestMethodD7249.PracticeD7250coversthedeterminationofsandwichflexuralandshearstiffnessandcoreshearmodulususingcalculationsinvolvingmeasureddeflectionsofsandwichflexurespecimens.Thistestmethodcanbeusedtoproducecoreshearstrengthandcore-to-facingshearstrengthdataforstructuraldesignallowables,materialspecifications,andresearchanddevelopmentapplications;itmayalsobeusedasaqualitycontroltestforbondedsandwichpanels.Factorsthatinfluencetheshearstrengthandshallthereforebereportedincludethefollowing:facingmaterial,corematerial,adhesivematerial,methodsofmaterialfabrication,coregeometry(cellsize),coredensity,adhesivethickness,specimengeometry,specimenpreparation,specimenconditioning,environmentoftesting,specimenalignment,loadingprocedure,speedoftesting,andadhesivevoidcontent.Further,core-to-facingstrengthmaybedifferentbetweenprecured/bondedandco-curedfacingsinsandwichpanelswiththesamecoreandfacingmaterial.Note28212;Concentratedloadsonbeamswiththinfacingsandlowdensitycorescanproduceresultsthataredifficulttointerpret,especiallyclosetothefailurepoint.Widerloadpadswithrubberpadsmayassistindistributingtheloads.1.1Thistestmethodcoversdeterminationofthecoreshearpropertiesofflatsandwichconstructionssubjectedtoflexureinsuchamannerthattheappliedmomentsproducecurvatureofthesandwichfacingplanes.Permissiblecorematerialformsincludethosewithcontinuousbondingsurfaces(suchasbalsawoodandfoams)aswellasthosewithdiscontinuousbondingsurfaces(suchashoneycomb).1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetexttheinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:83_120
【页数】:8P.;A4
【正文语种】:英语