【英文标准名称】:Methodsoftestingcement-Part8:heatofhydratation-Solutionmethod.
【原文标准名称】:水泥的试验方法.第8部分:水合热.溶液法
【标准号】:NFP15-479-2004
【标准状态】:作废
【国别】:法国
【发布日期】:2004-07-01
【实施或试行日期】:2004-07-05
【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】:试验;试验报告;粘合剂;测量;施工材料;化学分析和试验;水合热;水合热;建筑;热量计;试验溶液;溶解热;水泥;数学计算;分析方法;热容;溶液;试验设备;水合作用
【英文主题词】:Bindingagents;Calorimeters;Cements;Chemicalanalysisandtesting;Construction;Constructionmaterials;Heatcapacity;Heatofhydration;Heatofsolution;Hydration;Hydrationheat;Mathematicalcalculations;Measurement;Methodsofanalysis;Solutions;Testequipment;Testreports;Testsolutions;Testing
【摘要】:
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:15P.;A4
【正文语种】:其他
基本信息
标准名称: | 摆线针轮减速机 噪声测定方法 |
中标分类: |
机械 >>
通用零部件 >>
联轴器、制动器与变速器 |
发布部门: | 天津市石化通用机械研究所 |
发布日期: | 1994-07-18 |
实施日期: | 1995-07-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
归口单位: | 天津市石化通用机械研究所 |
出版日期: | 1900-01-01 |
页数: | 10 页 |
批文号: | 机械科[1994]597号 |
适用范围
本标准规定了摆线针轮减速机噪声声功率级测定的测试条件、测试仪器、测点位置及数量、声功率级的计算以及测试结果的判定原则。 本标准适用于在符合规定的试验场地(即环境修正量K2小于或等于3dB)测定减速机的A计权声功率级。在有要求时,根据本标准也可测定频带声功率级和指向性指数。
前言
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目录
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引用标准
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所属分类: 机械 通用零部件 联轴器 制动器与变速器
【英文标准名称】:StandardTestMethodforVolatilityRatebyThermogravimetry
【原文标准名称】:用热重分析法测定挥发速度的标准试验方法
【标准号】:ASTME2008-2008
【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】:E37.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:massloss;thermogravimetricanalysis(TGA);thermogravimetry(TG);volatility;volatilityrate;Masslosstesting;Thermogravimetricanalysis(TGA);Volatility
【摘要】:Volatilityofamaterialisnotanequilibriumthermodynamicpropertybutisacharacteristicofamaterialrelatedtoathermodynamicpropertythatisvaporpressure.Itisinfluencedbysuchfactorsassurfacearea,temperature,particlesize,andpurgegasflowrate;thatis,itisdiffusioncontrolled.Theextentofcontainmentachievedforspecimensinthistestmethodbymeansofapinholeopeningbetween0.33to0.38mmallowsformeasurementcircumstancesthatarerelativelyinsensitivetoexperimentalvariablesotherthantemperature.Decreasingtheextentofcontainmentbyuseofpinholeslargerthan0.38mmwillincreasethemagnitudeoftheobservedrateofmasslossbutwillalsoreducethemeasurementprecisionbyincreasingthesensitivitytovariationsinotherexperimentalvariables.Resultsobtainedbythistestmethodarenotstrictlyequivalenttothoseexperiencedinprocessingorhandlingconditionsbutmaybeusedtorankmaterialsfortheirvolatilityinsuchcircumstances.Therefore,thevolatilityratesdeterminedbythistestmethodshouldbeconsideredasindexvaluesonly.Thevolatilityratemaybeusedtoestimatesuchquantifiablevaluesasdryingintervalortheextentofvolatilereleasefromaprocess.DESIG:E228108a^TITLE:StandardPracticeforProcessandMeasurementCapabilityIndices^SIGNUSE:ProcessCapability8212;Processcapabilitycanbedefinedasthenaturalorinherentbehaviorofastableprocessthatisinastateofstatisticalcontrol(1).Ax201C;stateofstatisticalcontrolx201D;isachievedwhentheprocessexhibitsnodetectablepatternsortrends,suchthatthevariationseeninthedataisbelievedtoberandomandinherenttotheprocess.Processcapabilityislinkedtotheuseofcontrolchartsandthestateofstatisticalcontrol.Aprocessmustbestudiedtoevaluateitsstateofcontrolbeforeevaluatingprocesscapability.ProcessControl8212;Therearemanywaystoimplementcontrolcharts,butthemostpopularchoiceistoachieveastateofstatisticalcontrolfortheprocessunderstudy.Specialcausesareidentifiedbyasetofrulesbasedonprobabilitytheory.Theprocessisinvestigatedwheneverthechartsignalstheoccurrenceofspecialcauses.Takingappropriateactionstoeliminateidentifiedspecialcausesandpreventingtheirreappearancewillultimatelyobtainastateofstatisticalcontrol.Inthisstate,aminimumlevelofvariationmaybereached,whichisreferredtoascommoncauseorinherentvariation.Forthepurposeofthisstandard,thisvariationisameasureoftheuniformityofprocessoutput,typicallyaproductcharacteristic.ProcessCapabilityIndices8212;Thebehaviorofaprocess(asrelatedtoinherentvariability)inthestateofstatisticalcontrolisusedtodescribeitscapability.Tocompareaprocesswithcustomerrequirements(orspecifications),itiscommonpracticetothinkofcapabilityintermsoftheproportionoftheprocessoutputthatiswithinproductspecificationsortolerances.Themetricofthisproportionisthepercentageoftheprocessspreadusedupbythespecification.Thiscomparisonbecomestheessenceofallprocesscapabilitymeasures.Themannerinwhichthesemeasuresarecalculateddefinesthedifferenttypesofcapabilityindicesandtheiruse.Twoprocesscapabilityindicesaredefinedin5.2and5.3.Inpractice,theseindicesareusedtodriveprocessimprovementthroughcontinuousimprovementefforts.Theseindicesmaybeusedtoidentifytheneedformanagementactionsrequiredtoreducecommoncausevariation,compareproductsfromdifferentsources,andtocompareprocesse......
【中国标准分类号】:A42
【国际标准分类号】:71_040_50
【页数】:8P.;A4
【正文语种】:英语