【英文标准名称】:Solidbiofuels-Determinationofmajorelements-Al,Ca,Fe,Mg,P,K,Si,NaandTi;GermanversionEN15290:2011
【原文标准名称】:固体生物燃料.主要元素的测定-Al,Ca,Fe,Mg,P,K,Si,Na和Ti;德文版本EN15290-2011
【标准号】:EN15290-2011
【标准状态】:现行
【国别】:
【发布日期】:2011-04
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Ashes;Barium;Biofuels;Biomass;Calcium;Chemicalanalysisandtesting;Chemicalelements;Definitions;Determination;Fuels;Ingredients;Iron;Magnesium;Mainconstituents;Manganese;Materialstesting;Mathematicalcalculations;Phosphorus;Potassium;Rawmaterial;Sodium;Solidfuels;Spectrometry;Spectroscopy;Titanium
【摘要】:
【中国标准分类号】:D20
【国际标准分类号】:75_160_10
【页数】:21P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDynamicYoung'sModulus,ShearModulus,andPoisson'sRatiobyImpulseExcitationofVibration
【原文标准名称】:用振动脉冲激励测定动态杨氏模量、剪切模数和泊松比的标准试验方法
【标准号】:ASTME1876-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:陶瓷;动态的;弹性模量;弹性(流体);脉冲;泊松比;瓷器;剪切模量;试验方法;杨氏模量
【英文主题词】:dynamic;elasticmodulus;elasticproperties;impulse;Poisson'sratio;shearmodulus;Young'smodulus
【摘要】:1.1Thistestmethodcoversdeterminationofthedynamicelasticpropertiesofelasticmaterialsatambienttemperatures.Specimensofthesematerialspossessspecificmechanicalresonantfrequenciesthataredeterminedbytheelasticmodulus,mass,andgeometryofthetestspecimen.Thedynamicelasticpropertiesofamaterialcanthereforebecomputedifthegeometry,mass,andmechanicalresonantfrequenciesofasuitable(rectangularorcylindricalgeometry)testspecimenofthatmaterialcanbemeasured.DynamicYoung'smodulusisdeterminedusingtheresonantfrequencyineithertheflexuralorlongitudinalmodeofvibration.Thedynamicshearmodulus,ormodulusofrigidity,isfoundusingtorsionalresonantvibrations.DynamicYoung'smodulusanddynamicshearmodulusareusedtocomputePoisson'sratio.1.2Althoughnotspecificallydescribedherein,thistestmethodcanalsobeperformedatcryogenicandhightemperatureswithsuitableequipmentmodificationsandappropriatemodificationstothecalculationstocompensateforthermalexpansion.1.3TherearematerialspecificASTMstandardsthatcoverthedeterminationofresonancefrequenciesandelasticpropertiesofspecificmaterialsbysonicresonanceorbyimpulseexcitationofvibration.TestMethodsC215,C623,C747,C848,C1198,andC1259maydifferfromthistestmethodinseveralareas(forexample;samplesize,dimensionaltolerances,samplepreparation).Thetestingofthesematerialsshallbedoneincompliancewiththesematerialspecificstandards.Wherepossible,theprocedures,samplespecificationsandcalculationsareconsistentwiththesetestmethods.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q30
【国际标准分类号】:81_060_20
【页数】:15P.;A4
【正文语种】: